747831144 has 64 divisors (see below), whose sum is σ = 1920522240. Its totient is φ = 242519040.

The previous prime is 747831137. The next prime is 747831163. The reversal of 747831144 is 441138747.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 448857 + ... + 450519.

It is an arithmetic number, because the mean of its divisors is an integer number (30008160).

Almost surely, 2^747831144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 747831144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (960261120).

747831144 is an abundant number, since it is smaller than the sum of its proper divisors (1172691096).

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

747831144 is a wasteful number, since it uses less digits than its factorization.

747831144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170 (or 2166 counting only the distinct ones).

The product of its digits is 75264, while the sum is 39.

The square root of 747831144 is about 27346.5014947068. The cubic root of 747831144 is about 907.6836568699.

The spelling of 747831144 in words is "seven hundred forty-seven million, eight hundred thirty-one thousand, one hundred forty-four".