427559640 has 32 divisors (see below), whose sum is σ = 1282679280. Its totient is φ = 114015872.

The previous prime is 427559617. The next prime is 427559663. The reversal of 427559640 is 46955724.

It is an interprime number because it is at equal distance from previous prime (427559617) and next prime (427559663).

It is a junction number, because it is equal to n+sod(n) for n = 427559592 and 427559601.

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, 1781379 + ... + 1781618.

Almost surely, 2^427559640 is an apocalyptic number.

427559640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

427559640 is an abundant number, since it is smaller than the sum of its proper divisors (855119640).

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

427559640 is a wasteful number, since it uses less digits than its factorization.

427559640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3563011 (or 3563007 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The square root of 427559640 is about 20677.5153246225. The cubic root of 427559640 is about 753.3536571818.

The spelling of 427559640 in words is "four hundred twenty-seven million, five hundred fifty-nine thousand, six hundred forty".