747497280 has 56 divisors (see below), whose sum is σ = 2373306912. Its totient is φ = 199332352.

The previous prime is 747497269. The next prime is 747497287. The reversal of 747497280 is 82794747.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747497287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388362 + ... + 390281.

Almost surely, 2^747497280 is an apocalyptic number.

It is an amenable number.

747497280 is an abundant number, since it is smaller than the sum of its proper divisors (1625809632).

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

747497280 is a wasteful number, since it uses less digits than its factorization.

747497280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778663 (or 778653 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 48.

The square root of 747497280 is about 27340.3964857864. The cubic root of 747497280 is about 907.5485604171.

The spelling of 747497280 in words is "seven hundred forty-seven million, four hundred ninety-seven thousand, two hundred eighty".