731478880 has 72 divisors (see below), whose sum is σ = 1899552816. Its totient is φ = 265985280.

The previous prime is 731478851. The next prime is 731478901. The reversal of 731478880 is 88874137.

It is a super-2 number, since 2×731478880² = 1070122703772108800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 731478880.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 469 + ... + 38251.

It is an arithmetic number, because the mean of its divisors is an integer number (26382678).

Almost surely, 2^731478880 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 731478880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (949776408).

731478880 is an abundant number, since it is smaller than the sum of its proper divisors (1168073936).

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

731478880 is a wasteful number, since it uses less digits than its factorization.

731478880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37820 (or 37801 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 46.

The square root of 731478880 is about 27045.8662275772. The cubic root of 731478880 is about 901.0189611445.

The spelling of 731478880 in words is "seven hundred thirty-one million, four hundred seventy-eight thousand, eight hundred eighty".