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28252796442 = 23132325162743
BaseRepresentation
bin11010010011111111…
…110111011000011010
32200220222121202200020
4122103333313120122
5430330203441232
620551255251310
72020062543633
oct322377673032
980828552606
1028252796442
1110a88a70152
125585979b36
1328833cc240
14152039688a
15b0554de2c
hex693ff761a

28252796442 has 64 divisors (see below), whose sum is σ = 63751919616. Its totient is φ = 8281944000.

The previous prime is 28252796437. The next prime is 28252796459. The reversal of 28252796442 is 24469725282.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 418923 + ... + 481665.

It is an arithmetic number, because the mean of its divisors is an integer number (996123744).

Almost surely, 228252796442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28252796442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31875959808).

28252796442 is an abundant number, since it is smaller than the sum of its proper divisors (35499123174).

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

28252796442 is a wasteful number, since it uses less digits than its factorization.

28252796442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63035.

The product of its digits is 3870720, while the sum is 51.

The spelling of 28252796442 in words is "twenty-eight billion, two hundred fifty-two million, seven hundred ninety-six thousand, four hundred forty-two".

Divisors: 1 2 3 6 13 23 26 39 46 69 78 138 251 299 502 598 753 897 1506 1794 3263 5773 6526 9789 11546 17319 19578 34638 62743 75049 125486 150098 188229 225147 376458 450294 815659 1443089 1631318 2446977 2886178 4329267 4893954 8658534 15748493 18760157 31496986 37520314 47245479 56280471 94490958 112560942 204730409 362215339 409460818 614191227 724430678 1086646017 1228382454 2173292034 4708799407 9417598814 14126398221 28252796442