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28431035094 = 23721171123821
BaseRepresentation
bin11010011110100111…
…110010101011010110
32201101102000020010210
4122132213302223112
5431211321110334
621021103430250
72024355545100
oct323647625326
981342006123
1028431035094
111106a63a520
1256155b5386
1328b13074b7
141539d12570
15b1600a5e9
hex69e9f2ad6

28431035094 has 96 divisors (see below), whose sum is σ = 73175830272. Its totient is φ = 7280616000.

The previous prime is 28431035071. The next prime is 28431035173. The reversal of 28431035094 is 49053013482.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 167704 + ... + 291524.

It is an arithmetic number, because the mean of its divisors is an integer number (762248232).

Almost surely, 228431035094 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28431035094, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36587915136).

28431035094 is an abundant number, since it is smaller than the sum of its proper divisors (44744795178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28431035094 is a wasteful number, since it uses less digits than its factorization.

28431035094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123922 (or 123915 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 28431035094 in words is "twenty-eight billion, four hundred thirty-one million, thirty-five thousand, ninety-four".

Divisors: 1 2 3 6 7 11 14 21 22 33 42 49 66 71 77 98 142 147 154 213 231 294 426 462 497 539 781 994 1078 1491 1562 1617 2343 2982 3234 3479 4686 5467 6958 10437 10934 16401 20874 32802 38269 76538 114807 123821 229614 247642 371463 742926 866747 1362031 1733494 2600241 2724062 4086093 5200482 6067229 8172186 8791291 9534217 12134458 17582582 18201687 19068434 26373873 28602651 36403374 52747746 57205302 61539037 66739519 96704201 123078074 133479038 184617111 193408402 200218557 290112603 369234222 400437114 430773259 580225206 676929407 861546518 1292319777 1353858814 2030788221 2584639554 4061576442 4738505849 9477011698 14215517547 28431035094