102159620 has 24 divisors (see below), whose sum is σ = 218585304. Its totient is φ = 40092416.

The previous prime is 102159619. The next prime is 102159643. The reversal of 102159620 is 26951201.

It can be written as a sum of positive squares in 4 ways, for example, as 30824704 + 71334916 = 5552^2 + 8446^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102159620.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47129 + ... + 49248.

It is an arithmetic number, because the mean of its divisors is an integer number (9107721).

Almost surely, 2^102159620 is an apocalyptic number.

102159620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102159620 is an abundant number, since it is smaller than the sum of its proper divisors (116425684).

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

102159620 is a wasteful number, since it uses less digits than its factorization.

102159620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96439 (or 96437 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 102159620 is about 10107.4042167116. The cubic root of 102159620 is about 467.4764703572.

The spelling of 102159620 in words is "one hundred two million, one hundred fifty-nine thousand, six hundred twenty".