402930812 has 24 divisors (see below), whose sum is σ = 736893696. Its totient is φ = 192589488.

The previous prime is 402930811. The next prime is 402930841. The reversal of 402930812 is 218039204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402930811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16838 + ... + 33005.

It is an arithmetic number, because the mean of its divisors is an integer number (30703904).

Almost surely, 2^402930812 is an apocalyptic number.

It is an amenable number.

402930812 is a deficient number, since it is larger than the sum of its proper divisors (333962884).

402930812 is a wasteful number, since it uses less digits than its factorization.

402930812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49937 (or 49935 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 402930812 is about 20073.1365760312. The cubic root of 402930812 is about 738.6014564060.

The spelling of 402930812 in words is "four hundred two million, nine hundred thirty thousand, eight hundred twelve".