428577502 has 16 divisors (see below), whose sum is σ = 649635840. Its totient is φ = 212041368.

The previous prime is 428577437. The next prime is 428577529. The reversal of 428577502 is 205775824.

It is a happy number.

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, 104413 + ... + 108439.

It is an arithmetic number, because the mean of its divisors is an integer number (40602240).

Almost surely, 2^428577502 is an apocalyptic number.

428577502 is a deficient number, since it is larger than the sum of its proper divisors (221058338).

428577502 is a wasteful number, since it uses less digits than its factorization.

428577502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4575.

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 428577502 is about 20702.1134669869. The cubic root of 428577502 is about 753.9510025925.

The spelling of 428577502 in words is "four hundred twenty-eight million, five hundred seventy-seven thousand, five hundred two".