747285408 has 36 divisors (see below), whose sum is σ = 2125093698. Its totient is φ = 249095040.

The previous prime is 747285403. The next prime is 747285449. The reversal of 747285408 is 804582747.

It can be written as a sum of positive squares in only one way, i.e., 742671504 + 4613904 = 27252^2 + 2148^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (747285403) 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 5 ways as a sum of consecutive naturals, for example, 1297083 + ... + 1297658.

Almost surely, 2^747285408 is an apocalyptic number.

It is an amenable number.

747285408 is an abundant number, since it is smaller than the sum of its proper divisors (1377808290).

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

747285408 is a wasteful number, since it uses less digits than its factorization.

747285408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2594757 (or 2594746 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 45.

The square root of 747285408 is about 27336.5215051220. The cubic root of 747285408 is about 907.4628065717.

The spelling of 747285408 in words is "seven hundred forty-seven million, two hundred eighty-five thousand, four hundred eight".