43487172 has 72 divisors (see below), whose sum is σ = 116776800. Its totient is φ = 13994640.

The previous prime is 43487167. The next prime is 43487201. The reversal of 43487172 is 27178434.

It is a happy number.

43487172 is a `hidden beast` number, since 4 + 3 + 487 + 172 = 666.

It is a super-2 number, since 2×43487172² = 3782268257115168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103579 + ... + 103997.

It is an arithmetic number, because the mean of its divisors is an integer number (1621900).

Almost surely, 2^43487172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43487172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58388400).

43487172 is an abundant number, since it is smaller than the sum of its proper divisors (73289628).

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

43487172 is a wasteful number, since it uses less digits than its factorization.

43487172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 455 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 43487172 is about 6594.4804192597. The cubic root of 43487172 is about 351.6579084342.

The spelling of 43487172 in words is "forty-three million, four hundred eighty-seven thousand, one hundred seventy-two".