102789012 has 24 divisors (see below), whose sum is σ = 252464800. Its totient is φ = 32459616.

The previous prime is 102789007. The next prime is 102789017. The reversal of 102789012 is 210987201.

It is an interprime number because it is at equal distance from previous prime (102789007) and next prime (102789017).

It is a super-2 number, since 2×102789012² = 21131161975872288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102789017) 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, 225187 + ... + 225642.

Almost surely, 2^102789012 is an apocalyptic number.

102789012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102789012 is an abundant number, since it is smaller than the sum of its proper divisors (149675788).

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

102789012 is a wasteful number, since it uses less digits than its factorization.

102789012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450855 (or 450853 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 102789012 is about 10138.4916037841. The cubic root of 102789012 is about 468.4345259345.

The spelling of 102789012 in words is "one hundred two million, seven hundred eighty-nine thousand, twelve".