402903428 has 12 divisors (see below), whose sum is σ = 715605072. Its totient is φ = 198444840.

The previous prime is 402903407. The next prime is 402903439. The reversal of 402903428 is 824309204.

It is a junction number, because it is equal to n+sod(n) for n = 402903394 and 402903403.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751418 + ... + 751953.

It is an arithmetic number, because the mean of its divisors is an integer number (59633756).

Almost surely, 2^402903428 is an apocalyptic number.

It is an amenable number.

402903428 is a deficient number, since it is larger than the sum of its proper divisors (312701644).

402903428 is a wasteful number, since it uses less digits than its factorization.

402903428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503442 (or 1503440 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 402903428 is about 20072.4544587851. The cubic root of 402903428 is about 738.5847237397.

The spelling of 402903428 in words is "four hundred two million, nine hundred three thousand, four hundred twenty-eight".