427387776 has 64 divisors (see below), whose sum is σ = 1137402000. Its totient is φ = 142192640.

The previous prime is 427387759. The next prime is 427387823. The reversal of 427387776 is 677783724.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×427387776² = 365320622148452352, which contains 22 as substring.

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, 402286 + ... + 403346.

Almost surely, 2^427387776 is an apocalyptic number.

It is an amenable number.

427387776 is an abundant number, since it is smaller than the sum of its proper divisors (710014224).

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

427387776 is a wasteful number, since it uses less digits than its factorization.

427387776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2127 (or 2115 counting only the distinct ones).

The product of its digits is 2765952, while the sum is 51.

The square root of 427387776 is about 20673.3590884500. The cubic root of 427387776 is about 753.2527030592.

The spelling of 427387776 in words is "four hundred twenty-seven million, three hundred eighty-seven thousand, seven hundred seventy-six".