747451272 has 16 divisors (see below), whose sum is σ = 1868628240. Its totient is φ = 249150416.

The previous prime is 747451267. The next prime is 747451273. The reversal of 747451272 is 272154747.

It is a self number, because there is not a number n which added to its sum of digits gives 747451272.

It is not an unprimeable number, because it can be changed into a prime (747451273) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 15571878 + ... + 15571925.

It is an arithmetic number, because the mean of its divisors is an integer number (116789265).

Almost surely, 2^747451272 is an apocalyptic number.

It is an amenable number.

747451272 is an abundant number, since it is smaller than the sum of its proper divisors (1121176968).

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

747451272 is a wasteful number, since it uses less digits than its factorization.

747451272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31143812 (or 31143808 counting only the distinct ones).

The product of its digits is 109760, while the sum is 39.

The square root of 747451272 is about 27339.5550805056. Note that the first 3 decimals coincide. The cubic root of 747451272 is about 907.5299403489.

The spelling of 747451272 in words is "seven hundred forty-seven million, four hundred fifty-one thousand, two hundred seventy-two".