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28901049023 = 7211975211061
BaseRepresentation
bin11010111010101000…
…110000001010111111
32202121011102102001002
4122322220300022333
5433142132032043
621135453440515
72042123602100
oct327250601277
982534372032
1028901049023
1111290985990
125726aa013b
1329577c0a52
1415825003a7
15b423edbb8
hex6baa302bf

28901049023 has 48 divisors (see below), whose sum is σ = 37160127648. Its totient is φ = 22224384000.

The previous prime is 28901049011. The next prime is 28901049043. The reversal of 28901049023 is 32094010982.

It is not a de Polignac number, because 28901049023 - 26 = 28901048959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28901049043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27238913 + ... + 27239973.

It is an arithmetic number, because the mean of its divisors is an integer number (774169326).

Almost surely, 228901049023 is an apocalyptic number.

28901049023 is a deficient number, since it is larger than the sum of its proper divisors (8259078625).

28901049023 is a wasteful number, since it uses less digits than its factorization.

28901049023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704 (or 1697 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 28901049023 in words is "twenty-eight billion, nine hundred one million, forty-nine thousand, twenty-three".

Divisors: 1 7 11 49 77 97 521 539 679 1061 1067 3647 4753 5731 7427 7469 11671 25529 40117 50537 51989 52283 81697 102917 280819 353759 552781 555907 571879 720419 1132087 2476313 3869467 3891349 5042933 6080591 7924609 27086269 27239443 42564137 53619757 55472263 297948959 375338299 589817327 2627368093 4128721289 28901049023