43872420 has 48 divisors (see below), whose sum is σ = 124867008. Its totient is φ = 11506560.

The previous prime is 43872379. The next prime is 43872467. The reversal of 43872420 is 2427834.

It is a super-3 number, since 3×43872420³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2334 + ... + 9653.

It is an arithmetic number, because the mean of its divisors is an integer number (2601396).

Almost surely, 2^43872420 is an apocalyptic number.

It is an amenable number.

43872420 is an abundant number, since it is smaller than the sum of its proper divisors (80994588).

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

43872420 is a wasteful number, since it uses less digits than its factorization.

43872420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12060 (or 12058 counting only the distinct ones).

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

The square root of 43872420 is about 6623.6258952329. The cubic root of 43872420 is about 352.6932896967.

The spelling of 43872420 in words is "forty-three million, eight hundred seventy-two thousand, four hundred twenty".