426662478 has 40 divisors (see below), whose sum is σ = 1042957080. Its totient is φ = 129291120.

The previous prime is 426662477. The next prime is 426662491. The reversal of 426662478 is 874266624.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426662473) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 117933 + ... + 121496.

It is an arithmetic number, because the mean of its divisors is an integer number (26073927).

Almost surely, 2^426662478 is an apocalyptic number.

426662478 is an abundant number, since it is smaller than the sum of its proper divisors (616294602).

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

426662478 is a wasteful number, since it uses less digits than its factorization.

426662478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239454 (or 239445 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The square root of 426662478 is about 20655.8097880475. The cubic root of 426662478 is about 752.8263595429.

The spelling of 426662478 in words is "four hundred twenty-six million, six hundred sixty-two thousand, four hundred seventy-eight".