102645012 has 48 divisors (see below), whose sum is σ = 243908672. Its totient is φ = 33592320.

The previous prime is 102644981. The next prime is 102645013. The reversal of 102645012 is 210546201.

It is a self number, because there is not a number n which added to its sum of digits gives 102645012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102645013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189462 + ... + 190002.

Almost surely, 2^102645012 is an apocalyptic number.

102645012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102645012 is an abundant number, since it is smaller than the sum of its proper divisors (141263660).

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

102645012 is a wasteful number, since it uses less digits than its factorization.

102645012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 102645012 is about 10131.3874666800. The cubic root of 102645012 is about 468.2156760314.

The spelling of 102645012 in words is "one hundred two million, six hundred forty-five thousand, twelve".