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22102531249 = 173141940287
BaseRepresentation
bin10100100101011010…
…011101110010110001
32010001100210220220111
4110211122131302301
5330231221444444
614053113541321
71411502262421
oct244532356261
963040726814
1022102531249
119412336957
12434a114841
132113170976
1410d9630481
15895633234
hex52569dcb1

22102531249 has 8 divisors (see below), whose sum is σ = 24157605888. Its totient is φ = 20131337280.

The previous prime is 22102531201. The next prime is 22102531277. The reversal of 22102531249 is 94213520122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-22102531249 is a prime.

It is a super-2 number, since 2×221025312492 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22102531249.

It is not an unprimeable number, because it can be changed into a prime (22102531049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20969617 + ... + 20970670.

It is an arithmetic number, because the mean of its divisors is an integer number (3019700736).

Almost surely, 222102531249 is an apocalyptic number.

It is an amenable number.

22102531249 is a deficient number, since it is larger than the sum of its proper divisors (2055074639).

22102531249 is a wasteful number, since it uses less digits than its factorization.

22102531249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41940335.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 22102531249 in words is "twenty-two billion, one hundred two million, five hundred thirty-one thousand, two hundred forty-nine".

Divisors: 1 17 31 527 41940287 712984879 1300148897 22102531249