747798912 has 128 divisors (see below), whose sum is σ = 2522419200. Its totient is φ = 213649920.

The previous prime is 747798893. The next prime is 747798913. The reversal of 747798912 is 219897747.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747798913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8737 + ... + 39647.

It is an arithmetic number, because the mean of its divisors is an integer number (19706400).

Almost surely, 2^747798912 is an apocalyptic number.

747798912 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 747798912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1261209600).

747798912 is an abundant number, since it is smaller than the sum of its proper divisors (1774620288).

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

747798912 is a wasteful number, since it uses less digits than its factorization.

747798912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30941 (or 30923 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 54.

The square root of 747798912 is about 27345.9121625153. The cubic root of 747798912 is about 907.6706161008.

The spelling of 747798912 in words is "seven hundred forty-seven million, seven hundred ninety-eight thousand, nine hundred twelve".