68372040 has 64 divisors (see below), whose sum is σ = 223767360. Its totient is φ = 16574720.

The previous prime is 68371993. The next prime is 68372047. The reversal of 68372040 is 4027386.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 68371989 and 68372007.

It is not an unprimeable number, because it can be changed into a prime (68372047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24579 + ... + 27218.

It is an arithmetic number, because the mean of its divisors is an integer number (3496365).

Almost surely, 2^68372040 is an apocalyptic number.

68372040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68372040 is an abundant number, since it is smaller than the sum of its proper divisors (155395320).

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

68372040 is a wasteful number, since it uses less digits than its factorization.

68372040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51822 (or 51818 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 68372040 is about 8268.7387188132. The cubic root of 68372040 is about 408.9085386001.

The spelling of 68372040 in words is "sixty-eight million, three hundred seventy-two thousand, forty".