428685626 has 16 divisors (see below), whose sum is σ = 661236480. Its totient is φ = 208288080.

The previous prime is 428685623. The next prime is 428685629. The reversal of 428685626 is 626586824.

It is an interprime number because it is at equal distance from previous prime (428685623) and next prime (428685629).

It is not an unprimeable number, because it can be changed into a prime (428685623) 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, 64235 + ... + 70593.

It is an arithmetic number, because the mean of its divisors is an integer number (41327280).

Almost surely, 2^428685626 is an apocalyptic number.

428685626 is a deficient number, since it is larger than the sum of its proper divisors (232550854).

428685626 is a wasteful number, since it uses less digits than its factorization.

428685626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7309.

The product of its digits is 1105920, while the sum is 47.

The square root of 428685626 is about 20704.7247264966. The cubic root of 428685626 is about 754.0144009614.

The spelling of 428685626 in words is "four hundred twenty-eight million, six hundred eighty-five thousand, six hundred twenty-six".