421776612 has 48 divisors (see below), whose sum is σ = 1096334400. Its totient is φ = 140227200.

The previous prime is 421776601. The next prime is 421776617. The reversal of 421776612 is 216677124.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (421776617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38439 + ... + 48177.

It is an arithmetic number, because the mean of its divisors is an integer number (22840300).

Almost surely, 2^421776612 is an apocalyptic number.

It is an amenable number.

421776612 is an abundant number, since it is smaller than the sum of its proper divisors (674557788).

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

421776612 is a wasteful number, since it uses less digits than its factorization.

421776612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10153 (or 10145 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 421776612 is about 20537.2006855852. The cubic root of 421776612 is about 749.9416914669.

The spelling of 421776612 in words is "four hundred twenty-one million, seven hundred seventy-six thousand, six hundred twelve".