420917630 has 16 divisors (see below), whose sum is σ = 865887840. Its totient is φ = 144314592.

The previous prime is 420917599. The next prime is 420917633. The reversal of 420917630 is 36719024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420917633) 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, 3006485 + ... + 3006624.

It is an arithmetic number, because the mean of its divisors is an integer number (54117990).

Almost surely, 2^420917630 is an apocalyptic number.

420917630 is an abundant number, since it is smaller than the sum of its proper divisors (444970210).

420917630 is a wasteful number, since it uses less digits than its factorization.

420917630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6013123.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 420917630 is about 20516.2771964116. The cubic root of 420917630 is about 749.4322399361.

The spelling of 420917630 in words is "four hundred twenty million, nine hundred seventeen thousand, six hundred thirty".