402700928 has 64 divisors (see below), whose sum is σ = 956776320. Its totient is φ = 165073920.

The previous prime is 402700897. The next prime is 402700937. The reversal of 402700928 is 829007204.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×402700928² = 324336074824122368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 402700894 and 402700903.

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, 10838 + ... + 30378.

It is an arithmetic number, because the mean of its divisors is an integer number (14949630).

Almost surely, 2^402700928 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 402700928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (478388160).

402700928 is an abundant number, since it is smaller than the sum of its proper divisors (554075392).

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

402700928 is a wasteful number, since it uses less digits than its factorization.

402700928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19585 (or 19573 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 402700928 is about 20067.4095986502. The cubic root of 402700928 is about 738.4609649924.

The spelling of 402700928 in words is "four hundred two million, seven hundred thousand, nine hundred twenty-eight".