402670830 has 16 divisors (see below), whose sum is σ = 966410064. Its totient is φ = 107378880.

The previous prime is 402670817. The next prime is 402670837. The reversal of 402670830 is 38076204.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 13422361 = 402670830 / (4 + 0 + 2 + 6 + 7 + 0 + 8 + 3 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402670837) 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, 6711151 + ... + 6711210.

It is an arithmetic number, because the mean of its divisors is an integer number (60400629).

Almost surely, 2^402670830 is an apocalyptic number.

402670830 is an abundant number, since it is smaller than the sum of its proper divisors (563739234).

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

402670830 is a wasteful number, since it uses less digits than its factorization.

402670830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13422371.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 402670830 is about 20066.6596622358. The cubic root of 402670830 is about 738.4425669288.

The spelling of 402670830 in words is "four hundred two million, six hundred seventy thousand, eight hundred thirty".