115292840 has 32 divisors (see below), whose sum is σ = 279364680. Its totient is φ = 42569472.

The previous prime is 115292809. The next prime is 115292857. The reversal of 115292840 is 48292511.

It can be written as a sum of positive squares in 4 ways, for example, as 79316836 + 35976004 = 8906^2 + 5998^2 .

It is a junction number, because it is equal to n+sod(n) for n = 115292797 and 115292806.

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, 110339 + ... + 111378.

Almost surely, 2^115292840 is an apocalyptic number.

115292840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115292840 is an abundant number, since it is smaller than the sum of its proper divisors (164071840).

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

115292840 is a wasteful number, since it uses less digits than its factorization.

115292840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221741 (or 221737 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 115292840 is about 10737.4503491285. The cubic root of 115292840 is about 486.7068355743.

The spelling of 115292840 in words is "one hundred fifteen million, two hundred ninety-two thousand, eight hundred forty".