427821504 has 56 divisors (see below), whose sum is σ = 1234854528. Its totient is φ = 129642240.

The previous prime is 427821497. The next prime is 427821509. The reversal of 427821504 is 405128724.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427821509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99172 + ... + 103395.

Almost surely, 2^427821504 is an apocalyptic number.

427821504 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

427821504 is an abundant number, since it is smaller than the sum of its proper divisors (807033024).

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

427821504 is a wasteful number, since it uses less digits than its factorization.

427821504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202593 (or 202583 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 427821504 is about 20683.8464507934. The cubic root of 427821504 is about 753.5074259371.

The spelling of 427821504 in words is "four hundred twenty-seven million, eight hundred twenty-one thousand, five hundred four".