102021880 has 32 divisors (see below), whose sum is σ = 232700400. Its totient is φ = 40248576.

The previous prime is 102021847. The next prime is 102021889. The reversal of 102021880 is 88120201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021889) 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, 14550 + ... + 20389.

Almost surely, 2^102021880 is an apocalyptic number.

102021880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102021880 is an abundant number, since it is smaller than the sum of its proper divisors (130678520).

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

102021880 is a wasteful number, since it uses less digits than its factorization.

102021880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35023 (or 35019 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 102021880 is about 10100.5881016899. The cubic root of 102021880 is about 467.2662791243.

The spelling of 102021880 in words is "one hundred two million, twenty-one thousand, eight hundred eighty".