420878996 has 36 divisors (see below), whose sum is σ = 802904508. Its totient is φ = 192236544.

The previous prime is 420878987. The next prime is 420878999. The reversal of 420878996 is 699878024.

It can be written as a sum of positive squares in 6 ways, for example, as 242923396 + 177955600 = 15586^2 + 13340^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420878999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1028840 + ... + 1029248.

It is an arithmetic number, because the mean of its divisors is an integer number (22302903).

Almost surely, 2^420878996 is an apocalyptic number.

It is an amenable number.

420878996 is a deficient number, since it is larger than the sum of its proper divisors (382025512).

420878996 is a wasteful number, since it uses less digits than its factorization.

420878996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876 (or 465 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 420878996 is about 20515.3356297186. The cubic root of 420878996 is about 749.4093103105.

The spelling of 420878996 in words is "four hundred twenty million, eight hundred seventy-eight thousand, nine hundred ninety-six".