72477762 has 24 divisors (see below), whose sum is σ = 168622416. Its totient is φ = 20707848.

The previous prime is 72477751. The next prime is 72477763. The reversal of 72477762 is 26777427.

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

It is not an unprimeable number, because it can be changed into a prime (72477763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122968 + ... + 123555.

It is an arithmetic number, because the mean of its divisors is an integer number (7025934).

Almost surely, 2^72477762 is an apocalyptic number.

72477762 is an abundant number, since it is smaller than the sum of its proper divisors (96144654).

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

72477762 is a wasteful number, since it uses less digits than its factorization.

72477762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246542 (or 246535 counting only the distinct ones).

The product of its digits is 230496, while the sum is 42.

The square root of 72477762 is about 8513.3872224867. The cubic root of 72477762 is about 416.9349080924.

The spelling of 72477762 in words is "seventy-two million, four hundred seventy-seven thousand, seven hundred sixty-two".