102644536 has 32 divisors (see below), whose sum is σ = 205632000. Its totient is φ = 47890656.

The previous prime is 102644519. The next prime is 102644539. The reversal of 102644536 is 635446201.

It is a junction number, because it is equal to n+sod(n) for n = 102644498 and 102644507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102644539) 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, 5145 + ... + 15223.

It is an arithmetic number, because the mean of its divisors is an integer number (6426000).

Almost surely, 2^102644536 is an apocalyptic number.

It is an amenable number.

102644536 is an abundant number, since it is smaller than the sum of its proper divisors (102987464).

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

102644536 is a wasteful number, since it uses less digits than its factorization.

102644536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10171 (or 10167 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 102644536 is about 10131.3639752997. The cubic root of 102644536 is about 468.2149522716.

The spelling of 102644536 in words is "one hundred two million, six hundred forty-four thousand, five hundred thirty-six".