102169988 has 12 divisors (see below), whose sum is σ = 179246172. Its totient is φ = 50956800.

The previous prime is 102169961. The next prime is 102169999. The reversal of 102169988 is 889961201.

It can be written as a sum of positive squares in 2 ways, for example, as 56580484 + 45589504 = 7522^2 + 6752^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30245 + ... + 33452.

It is an arithmetic number, because the mean of its divisors is an integer number (14937181).

Almost surely, 2^102169988 is an apocalyptic number.

It is an amenable number.

102169988 is a deficient number, since it is larger than the sum of its proper divisors (77076184).

102169988 is a wasteful number, since it uses less digits than its factorization.

102169988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64102 (or 64100 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 44.

The square root of 102169988 is about 10107.9170950300. The cubic root of 102169988 is about 467.4922842769.

The spelling of 102169988 in words is "one hundred two million, one hundred sixty-nine thousand, nine hundred eighty-eight".