747227520 has 384 divisors, whose sum is σ = 2947220640. Its totient is φ = 172818432.

The previous prime is 747227513. The next prime is 747227531. The reversal of 747227520 is 25722747.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1272667 + ... + 1273253.

Almost surely, 2^747227520 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 747227520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1473610320).

747227520 is an abundant number, since it is smaller than the sum of its proper divisors (2199993120).

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

747227520 is a wasteful number, since it uses less digits than its factorization.

747227520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 36.

The square root of 747227520 is about 27335.4626812864. The cubic root of 747227520 is about 907.4393739523.

It can be divided in two parts, 747227 and 520, that added together give a palindrome (747747).

The spelling of 747227520 in words is "seven hundred forty-seven million, two hundred twenty-seven thousand, five hundred twenty".