427432978 has 48 divisors (see below), whose sum is σ = 765379584. Its totient is φ = 178446240.

The previous prime is 427432961. The next prime is 427432981. The reversal of 427432978 is 879234724.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 758925 + ... + 759487.

It is an arithmetic number, because the mean of its divisors is an integer number (15945408).

Almost surely, 2^427432978 is an apocalyptic number.

427432978 is a deficient number, since it is larger than the sum of its proper divisors (337946606).

427432978 is a wasteful number, since it uses less digits than its factorization.

427432978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767 (or 760 counting only the distinct ones).

The product of its digits is 677376, while the sum is 46.

The square root of 427432978 is about 20674.4523022981. The cubic root of 427432978 is about 753.2792576546.

The spelling of 427432978 in words is "four hundred twenty-seven million, four hundred thirty-two thousand, nine hundred seventy-eight".