102279492 has 36 divisors (see below), whose sum is σ = 295474816. Its totient is φ = 29222640.

The previous prime is 102279487. The next prime is 102279523. The reversal of 102279492 is 294972201.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×102279492² = 20922188967556128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202684 + ... + 203187.

Almost surely, 2^102279492 is an apocalyptic number.

102279492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102279492 is an abundant number, since it is smaller than the sum of its proper divisors (193195324).

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

102279492 is a wasteful number, since it uses less digits than its factorization.

102279492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405888 (or 405883 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 102279492 is about 10113.3323884860. The cubic root of 102279492 is about 467.6592413191.

The spelling of 102279492 in words is "one hundred two million, two hundred seventy-nine thousand, four hundred ninety-two".