420667872 has 48 divisors (see below), whose sum is σ = 1131196752. Its totient is φ = 136801280.

The previous prime is 420667801. The next prime is 420667883. The reversal of 420667872 is 278766024.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×420667872² = 353922917066016768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49503 + ... + 57374.

It is an arithmetic number, because the mean of its divisors is an integer number (23566599).

Almost surely, 2^420667872 is an apocalyptic number.

It is an amenable number.

420667872 is an abundant number, since it is smaller than the sum of its proper divisors (710528880).

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

420667872 is a wasteful number, since it uses less digits than its factorization.

420667872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106931 (or 106923 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 420667872 is about 20510.1894676768. The cubic root of 420667872 is about 749.2839815298.

The spelling of 420667872 in words is "four hundred twenty million, six hundred sixty-seven thousand, eight hundred seventy-two".