102428986 has 32 divisors (see below), whose sum is σ = 174545280. Its totient is φ = 44654400.

The previous prime is 102428939. The next prime is 102428999. The reversal of 102428986 is 689824201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115035 + ... + 115921.

It is an arithmetic number, because the mean of its divisors is an integer number (5454540).

Almost surely, 2^102428986 is an apocalyptic number.

102428986 is a deficient number, since it is larger than the sum of its proper divisors (72116294).

102428986 is a wasteful number, since it uses less digits than its factorization.

102428986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 102428986 is about 10120.7206265167. The cubic root of 102428986 is about 467.8869774798.

The spelling of 102428986 in words is "one hundred two million, four hundred twenty-eight thousand, nine hundred eighty-six".