402830940 has 48 divisors (see below), whose sum is σ = 1138894848. Its totient is φ = 106377024.

The previous prime is 402830917. The next prime is 402830959. The reversal of 402830940 is 49038204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 402830898 and 402830907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26412 + ... + 38771.

It is an arithmetic number, because the mean of its divisors is an integer number (23726976).

Almost surely, 2^402830940 is an apocalyptic number.

It is an amenable number.

402830940 is an abundant number, since it is smaller than the sum of its proper divisors (736063908).

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

402830940 is a wasteful number, since it uses less digits than its factorization.

402830940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65298 (or 65296 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 402830940 is about 20070.6487189627. The cubic root of 402830940 is about 738.5404271524.

The spelling of 402830940 in words is "four hundred two million, eight hundred thirty thousand, nine hundred forty".