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23081274 = 23417329
BaseRepresentation
bin101100000001…
…1000100111010
31121102122120000
41120003010322
521402100044
62142413430
7400121226
oct130030472
947378500
1023081274
1112035337
127891276
134a21a78
1430cb786
15205dd69
hex160313a

23081274 has 80 divisors (see below), whose sum is σ = 56845800. Its totient is φ = 6991488.

The previous prime is 23081273. The next prime is 23081281. The reversal of 23081274 is 47218032.

It can be written as a sum of positive squares in 4 ways, for example, as 20657025 + 2424249 = 4545^2 + 1557^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (23081273) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 795892 + ... + 795920.

Almost surely, 223081274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23081274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28422900).

23081274 is an abundant number, since it is smaller than the sum of its proper divisors (33764526).

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

23081274 is an equidigital number, since it uses as much as digits as its factorization.

23081274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 23081274 is about 4804.2974512409. The cubic root of 23081274 is about 284.7212787546.

The spelling of 23081274 in words is "twenty-three million, eighty-one thousand, two hundred seventy-four".

Divisors: 1 2 3 6 9 17 18 27 29 34 51 54 58 81 87 102 153 162 174 261 289 306 459 493 522 578 783 867 918 986 1377 1479 1566 1734 2349 2601 2754 2958 4437 4698 4913 5202 7803 8381 8874 9826 13311 14739 15606 16762 23409 25143 26622 29478 39933 44217 46818 50286 75429 79866 88434 132651 142477 150858 226287 265302 284954 397953 427431 452574 678861 795906 854862 1282293 1357722 2564586 3846879 7693758 11540637 23081274