420471672 has 32 divisors (see below), whose sum is σ = 1106505600. Its totient is φ = 132780384.

The previous prime is 420471641. The next prime is 420471679. The reversal of 420471672 is 276174024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420471679) 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, 460588 + ... + 461499.

It is an arithmetic number, because the mean of its divisors is an integer number (34578300).

Almost surely, 2^420471672 is an apocalyptic number.

It is an amenable number.

420471672 is an abundant number, since it is smaller than the sum of its proper divisors (686033928).

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

420471672 is a wasteful number, since it uses less digits than its factorization.

420471672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922115 (or 922111 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 420471672 is about 20505.4059213662. The cubic root of 420471672 is about 749.1674744324.

The spelling of 420471672 in words is "four hundred twenty million, four hundred seventy-one thousand, six hundred seventy-two".