43490172 has 24 divisors (see below), whose sum is σ = 110702592. Its totient is φ = 13178800.

The previous prime is 43490147. The next prime is 43490189. The reversal of 43490172 is 27109434.

It is a happy number.

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, 164604 + ... + 164867.

It is an arithmetic number, because the mean of its divisors is an integer number (4612608).

Almost surely, 2^43490172 is an apocalyptic number.

It is an amenable number.

43490172 is an abundant number, since it is smaller than the sum of its proper divisors (67212420).

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

43490172 is a wasteful number, since it uses less digits than its factorization.

43490172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329489 (or 329487 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 43490172 is about 6594.7078782915. The cubic root of 43490172 is about 351.6659947228.

The spelling of 43490172 in words is "forty-three million, four hundred ninety thousand, one hundred seventy-two".