747197440 has 88 divisors (see below), whose sum is σ = 1955490912. Its totient is φ = 271687680.

The previous prime is 747197393. The next prime is 747197461. The reversal of 747197440 is 44791747.

It is a tau number, because it is divible by the number of its divisors (88).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49687 + ... + 62953.

Almost surely, 2^747197440 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 747197440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (977745456).

747197440 is an abundant number, since it is smaller than the sum of its proper divisors (1208293472).

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

747197440 is a wasteful number, since it uses less digits than its factorization.

747197440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13303 (or 13285 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 43.

The square root of 747197440 is about 27334.9124747090. The cubic root of 747197440 is about 907.4271973208.

The spelling of 747197440 in words is "seven hundred forty-seven million, one hundred ninety-seven thousand, four hundred forty".