108372640 has 36 divisors (see below), whose sum is σ = 256341834. Its totient is φ = 43296384.

The previous prime is 108372577. The next prime is 108372643. The reversal of 108372640 is 46273801.

It can be written as a sum of positive squares in only one way, i.e., 97535376 + 10837264 = 9876^2 + 3292^2 .

It is not an unprimeable number, because it can be changed into a prime (108372643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131269 + ... + 132091.

Almost surely, 2^108372640 is an apocalyptic number.

108372640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

108372640 is an abundant number, since it is smaller than the sum of its proper divisors (147969194).

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

108372640 is an frugal number, since it uses more digits than its factorization.

108372640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661 (or 830 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 108372640 is about 10410.2180572743. The cubic root of 108372640 is about 476.7673990142.

The spelling of 108372640 in words is "one hundred eight million, three hundred seventy-two thousand, six hundred forty".