747720344 has 16 divisors (see below), whose sum is σ = 1602258000. Its totient is φ = 320451552.

The previous prime is 747720331. The next prime is 747720353. The reversal of 747720344 is 443027747.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 747720298 and 747720307.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 6676019 + ... + 6676130.

It is an arithmetic number, because the mean of its divisors is an integer number (100141125).

Almost surely, 2^747720344 is an apocalyptic number.

It is an amenable number.

747720344 is an abundant number, since it is smaller than the sum of its proper divisors (854537656).

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

747720344 is a wasteful number, since it uses less digits than its factorization.

747720344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13352162 (or 13352158 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 38.

The square root of 747720344 is about 27344.4755663735. The cubic root of 747720344 is about 907.6388266444.

The spelling of 747720344 in words is "seven hundred forty-seven million, seven hundred twenty thousand, three hundred forty-four".