102015880 has 32 divisors (see below), whose sum is σ = 230169600. Its totient is φ = 40693696.

The previous prime is 102015877. The next prime is 102015917. The reversal of 102015880 is 88510201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11991 + ... + 18649.

It is an arithmetic number, because the mean of its divisors is an integer number (7192800).

Almost surely, 2^102015880 is an apocalyptic number.

102015880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102015880 is an abundant number, since it is smaller than the sum of its proper divisors (128153720).

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

102015880 is a wasteful number, since it uses less digits than its factorization.

102015880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7053 (or 7049 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 102015880 is about 10100.2910849143. The cubic root of 102015880 is about 467.2571188257.

It can be divided in two parts, 1020 and 15880, that added together give a square (16900 = 130²).

The spelling of 102015880 in words is "one hundred two million, fifteen thousand, eight hundred eighty".