427995840 has 56 divisors (see below), whose sum is σ = 1358889840. Its totient is φ = 114131968.

The previous prime is 427995839. The next prime is 427995857. The reversal of 427995840 is 48599724.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 427995840.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221955 + ... + 223874.

It is an arithmetic number, because the mean of its divisors is an integer number (24265890).

Almost surely, 2^427995840 is an apocalyptic number.

427995840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

427995840 is an abundant number, since it is smaller than the sum of its proper divisors (930894000).

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

427995840 is a wasteful number, since it uses less digits than its factorization.

427995840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445849 (or 445839 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 427995840 is about 20688.0603247380. The cubic root of 427995840 is about 753.6097627217.

The spelling of 427995840 in words is "four hundred twenty-seven million, nine hundred ninety-five thousand, eight hundred forty".