747527440 has 80 divisors (see below), whose sum is σ = 1903378176. Its totient is φ = 270771200.

The previous prime is 747527377. The next prime is 747527453. The reversal of 747527440 is 44725747.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 747527393 and 747527402.

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 15 ways as a sum of consecutive naturals, for example, 245769 + ... + 248791.

Almost surely, 2^747527440 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 747527440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (951689088).

747527440 is an abundant number, since it is smaller than the sum of its proper divisors (1155850736).

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

747527440 is a wasteful number, since it uses less digits than its factorization.

747527440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3328 (or 3322 counting only the distinct ones).

The product of its (nonzero) digits is 219520, while the sum is 40.

The square root of 747527440 is about 27340.9480450112. The cubic root of 747527440 is about 907.5607661678.

The spelling of 747527440 in words is "seven hundred forty-seven million, five hundred twenty-seven thousand, four hundred forty".