43890972 has 24 divisors (see below), whose sum is σ = 103372416. Its totient is φ = 14493168.

The previous prime is 43890971. The next prime is 43891013. The reversal of 43890972 is 27909834.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43890971) 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, 15808 + ... + 18375.

It is an arithmetic number, because the mean of its divisors is an integer number (4307184).

Almost surely, 2^43890972 is an apocalyptic number.

It is an amenable number.

43890972 is an abundant number, since it is smaller than the sum of its proper divisors (59481444).

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

43890972 is a wasteful number, since it uses less digits than its factorization.

43890972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34297 (or 34295 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 43890972 is about 6625.0261886275. The cubic root of 43890972 is about 352.7429962765.

The spelling of 43890972 in words is "forty-three million, eight hundred ninety thousand, nine hundred seventy-two".