102115080 has 80 divisors (see below), whose sum is σ = 343231020. Its totient is φ = 27229824.

The previous prime is 102115043. The next prime is 102115081. The reversal of 102115080 is 80511201.

It can be written as a sum of positive squares in 2 ways, for example, as 94128804 + 7986276 = 9702^2 + 2826^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (102115081) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12519 + ... + 18998.

Almost surely, 2^102115080 is an apocalyptic number.

102115080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102115080 is an abundant number, since it is smaller than the sum of its proper divisors (241115940).

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

102115080 is a wasteful number, since it uses less digits than its factorization.

102115080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31540 (or 31527 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 102115080 is about 10105.2006412540. The cubic root of 102115080 is about 467.4085229997.

Adding to 102115080 its reverse (80511201), we get a palindrome (182626281).

The spelling of 102115080 in words is "one hundred two million, one hundred fifteen thousand, eighty".