420618692 has 54 divisors (see below), whose sum is σ = 847097118. Its totient is φ = 182627328.

The previous prime is 420618689. The next prime is 420618703. The reversal of 420618692 is 296816024.

It can be written as a sum of positive squares in 9 ways, for example, as 192487876 + 228130816 = 13874^2 + 15104^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 194288 + ... + 196440.

Almost surely, 2^420618692 is an apocalyptic number.

It is an amenable number.

420618692 is an abundant number, since it is smaller than the sum of its proper divisors (426478426).

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

420618692 is a wasteful number, since it uses less digits than its factorization.

420618692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217 (or 2185 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 420618692 is about 20508.9905163565. The cubic root of 420618692 is about 749.2547809619.

The spelling of 420618692 in words is "four hundred twenty million, six hundred eighteen thousand, six hundred ninety-two".