72477636 has 48 divisors (see below), whose sum is σ = 210846720. Its totient is φ = 18825120.

The previous prime is 72477611. The next prime is 72477653. The reversal of 72477636 is 63677427.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38296 + ... + 40143.

It is an arithmetic number, because the mean of its divisors is an integer number (4392640).

Almost surely, 2^72477636 is an apocalyptic number.

It is an amenable number.

72477636 is an abundant number, since it is smaller than the sum of its proper divisors (138369084).

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

72477636 is a wasteful number, since it uses less digits than its factorization.

72477636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78464 (or 78462 counting only the distinct ones).

The product of its digits is 296352, while the sum is 42.

The square root of 72477636 is about 8513.3798223737. The cubic root of 72477636 is about 416.9346664835.

The spelling of 72477636 in words is "seventy-two million, four hundred seventy-seven thousand, six hundred thirty-six".