426621478 has 16 divisors (see below), whose sum is σ = 675929520. Its totient is φ = 201388896.

The previous prime is 426621469. The next prime is 426621487. The reversal of 426621478 is 874126624.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (426621469) and next prime (426621487).

It is a self number, because there is not a number n which added to its sum of digits gives 426621478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8025 + ... + 30292.

It is an arithmetic number, because the mean of its divisors is an integer number (42245595).

Almost surely, 2^426621478 is an apocalyptic number.

426621478 is a deficient number, since it is larger than the sum of its proper divisors (249308042).

426621478 is a wasteful number, since it uses less digits than its factorization.

426621478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38631.

The product of its digits is 129024, while the sum is 40.

The square root of 426621478 is about 20654.8173073499. The cubic root of 426621478 is about 752.8022445643.

The spelling of 426621478 in words is "four hundred twenty-six million, six hundred twenty-one thousand, four hundred seventy-eight".