102538220 has 24 divisors (see below), whose sum is σ = 227997504. Its totient is φ = 38602496.

The previous prime is 102538217. The next prime is 102538243. The reversal of 102538220 is 22835201.

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, 150452 + ... + 151131.

It is an arithmetic number, because the mean of its divisors is an integer number (9499896).

Almost surely, 2^102538220 is an apocalyptic number.

102538220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102538220 is an abundant number, since it is smaller than the sum of its proper divisors (125459284).

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

102538220 is a wasteful number, since it uses less digits than its factorization.

102538220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301609 (or 301607 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 102538220 is about 10126.1157409937. The cubic root of 102538220 is about 468.0532422929.

The spelling of 102538220 in words is "one hundred two million, five hundred thirty-eight thousand, two hundred twenty".