427531620 has 24 divisors (see below), whose sum is σ = 1197088704. Its totient is φ = 114008416.

The previous prime is 427531583. The next prime is 427531639. The reversal of 427531620 is 26135724.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3562704 + ... + 3562823.

It is an arithmetic number, because the mean of its divisors is an integer number (49878696).

Almost surely, 2^427531620 is an apocalyptic number.

It is an amenable number.

427531620 is an abundant number, since it is smaller than the sum of its proper divisors (769557084).

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

427531620 is a wasteful number, since it uses less digits than its factorization.

427531620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7125539 (or 7125537 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 427531620 is about 20676.8377659641. The cubic root of 427531620 is about 753.3371998827.

The spelling of 427531620 in words is "four hundred twenty-seven million, five hundred thirty-one thousand, six hundred twenty".