43680438 has 32 divisors (see below), whose sum is σ = 100418400. Its totient is φ = 14057568.

The previous prime is 43680419. The next prime is 43680451. The reversal of 43680438 is 83408634.

It is a congruent number.

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, 12381 + ... + 15512.

It is an arithmetic number, because the mean of its divisors is an integer number (3138075).

Almost surely, 2^43680438 is an apocalyptic number.

43680438 is an abundant number, since it is smaller than the sum of its proper divisors (56737962).

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

43680438 is a wasteful number, since it uses less digits than its factorization.

43680438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27933 (or 27927 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 43680438 is about 6609.1177928677. The cubic root of 43680438 is about 352.1780854638.

The spelling of 43680438 in words is "forty-three million, six hundred eighty thousand, four hundred thirty-eight".