420617216 has 22 divisors (see below), whose sum is σ = 840825720. Its totient is φ = 210308096.

The previous prime is 420617173. The next prime is 420617233. The reversal of 420617216 is 612716024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204356 + ... + 206403.

Almost surely, 2^420617216 is an apocalyptic number.

It is an amenable number.

420617216 is a deficient number, since it is larger than the sum of its proper divisors (420208504).

420617216 is an equidigital number, since it uses as much as digits as its factorization.

420617216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410779 (or 410761 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 420617216 is about 20508.9545321062. The cubic root of 420617216 is about 749.2539045534.

The spelling of 420617216 in words is "four hundred twenty million, six hundred seventeen thousand, two hundred sixteen".