728548408 has 32 divisors (see below), whose sum is σ = 1566725760. Its totient is φ = 311124960.

The previous prime is 728548399. The next prime is 728548417. The reversal of 728548408 is 804845827.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (728548399) and next prime (728548417).

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, 7138 + ... + 38833.

It is an arithmetic number, because the mean of its divisors is an integer number (48960180).

Almost surely, 2^728548408 is an apocalyptic number.

It is an amenable number.

728548408 is an abundant number, since it is smaller than the sum of its proper divisors (838177352).

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

728548408 is a wasteful number, since it uses less digits than its factorization.

728548408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46267 (or 46263 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 46.

The square root of 728548408 is about 26991.6358896603. The cubic root of 728548408 is about 899.8141212835.

The spelling of 728548408 in words is "seven hundred twenty-eight million, five hundred forty-eight thousand, four hundred eight".