427679980 has 48 divisors (see below), whose sum is σ = 1105392960. Its totient is φ = 135353088.

The previous prime is 427679971. The next prime is 427679981. The reversal of 427679980 is 89976724.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (427679981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115675 + ... + 119314.

It is an arithmetic number, because the mean of its divisors is an integer number (23029020).

Almost surely, 2^427679980 is an apocalyptic number.

It is an amenable number.

427679980 is an abundant number, since it is smaller than the sum of its proper divisors (677712980).

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

427679980 is a wasteful number, since it uses less digits than its factorization.

427679980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235018 (or 235016 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 52.

The square root of 427679980 is about 20680.4250439879. The cubic root of 427679980 is about 753.4243296420.

The spelling of 427679980 in words is "four hundred twenty-seven million, six hundred seventy-nine thousand, nine hundred eighty".