102491080 has 16 divisors (see below), whose sum is σ = 230605020. Its totient is φ = 40996416.

The previous prime is 102491071. The next prime is 102491117. The reversal of 102491080 is 80194201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 94906564 + 7584516 = 9742^2 + 2754^2 .

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, 1281099 + ... + 1281178.

Almost surely, 2^102491080 is an apocalyptic number.

102491080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102491080 is an abundant number, since it is smaller than the sum of its proper divisors (128113940).

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

102491080 is a wasteful number, since it uses less digits than its factorization.

102491080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562288 (or 2562284 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 102491080 is about 10123.7878286736. The cubic root of 102491080 is about 467.9815051010.

The spelling of 102491080 in words is "one hundred two million, four hundred ninety-one thousand, eighty".