747221312 has 28 divisors (see below), whose sum is σ = 1507906560. Its totient is φ = 367276416.

The previous prime is 747221297. The next prime is 747221317. The reversal of 747221312 is 213122747.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747221317) 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 3 ways as a sum of consecutive naturals, for example, 95168 + ... + 102719.

Almost surely, 2^747221312 is an apocalyptic number.

It is an amenable number.

747221312 is an abundant number, since it is smaller than the sum of its proper divisors (760685248).

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

747221312 is a wasteful number, since it uses less digits than its factorization.

747221312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197958 (or 197948 counting only the distinct ones).

The product of its digits is 4704, while the sum is 29.

The square root of 747221312 is about 27335.3491289210. The cubic root of 747221312 is about 907.4368609296.

The spelling of 747221312 in words is "seven hundred forty-seven million, two hundred twenty-one thousand, three hundred twelve".