72374540 has 36 divisors (see below), whose sum is σ = 173940816. Its totient is φ = 24779616.

The previous prime is 72374527. The next prime is 72374543. The reversal of 72374540 is 4547327.

It is a junction number, because it is equal to n+sod(n) for n = 72374497 and 72374506.

It is not an unprimeable number, because it can be changed into a prime (72374543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100301 + ... + 101019.

Almost surely, 2^72374540 is an apocalyptic number.

72374540 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

72374540 is an abundant number, since it is smaller than the sum of its proper divisors (101566276).

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

72374540 is an equidigital number, since it uses as much as digits as its factorization.

72374540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454 (or 733 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 72374540 is about 8507.3227280972. The cubic root of 72374540 is about 416.7368827444.

The spelling of 72374540 in words is "seventy-two million, three hundred seventy-four thousand, five hundred forty".