102885520 has 40 divisors (see below), whose sum is σ = 240022584. Its totient is φ = 41014272.

The previous prime is 102885487. The next prime is 102885553. The reversal of 102885520 is 25588201.

It is an interprime number because it is at equal distance from previous prime (102885487) and next prime (102885553).

It can be written as a sum of positive squares in 4 ways, for example, as 309136 + 102576384 = 556^2 + 10128^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 23332 + ... + 27388.

Almost surely, 2^102885520 is an apocalyptic number.

102885520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102885520 is the 5072-nd decagonal number.

It is an amenable number.

102885520 is an abundant number, since it is smaller than the sum of its proper divisors (137137064).

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

102885520 is a wasteful number, since it uses less digits than its factorization.

102885520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4387 (or 4381 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 102885520 is about 10143.2499722722. The cubic root of 102885520 is about 468.5810835522.

The spelling of 102885520 in words is "one hundred two million, eight hundred eighty-five thousand, five hundred twenty".