428680724 has 24 divisors (see below), whose sum is σ = 761281248. Its totient is φ = 211186080.

The previous prime is 428680691. The next prime is 428680751. The reversal of 428680724 is 427086824.

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, 138239 + ... + 141305.

It is an arithmetic number, because the mean of its divisors is an integer number (31720052).

Almost surely, 2^428680724 is an apocalyptic number.

It is an amenable number.

428680724 is a deficient number, since it is larger than the sum of its proper divisors (332600524).

428680724 is a wasteful number, since it uses less digits than its factorization.

428680724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3575 (or 3573 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 41.

The square root of 428680724 is about 20704.6063473808. The cubic root of 428680724 is about 754.0115269107.

The spelling of 428680724 in words is "four hundred twenty-eight million, six hundred eighty thousand, seven hundred twenty-four".