420272832 has 56 divisors (see below), whose sum is σ = 1270829056. Its totient is φ = 120077568.

The previous prime is 420272821. The next prime is 420272833. The reversal of 420272832 is 238272024.

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 420272832.

It is not an unprimeable number, because it can be changed into a prime (420272833) 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, 155008 + ... + 157695.

It is an arithmetic number, because the mean of its divisors is an integer number (22693376).

Almost surely, 2^420272832 is an apocalyptic number.

420272832 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

420272832 is an abundant number, since it is smaller than the sum of its proper divisors (850556224).

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

420272832 is a wasteful number, since it uses less digits than its factorization.

420272832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312725 (or 312715 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 420272832 is about 20500.5568704853. The cubic root of 420272832 is about 749.0493626718.

The spelling of 420272832 in words is "four hundred twenty million, two hundred seventy-two thousand, eight hundred thirty-two".