43138790 has 16 divisors (see below), whose sum is σ = 77837760. Its totient is φ = 17213760.

The previous prime is 43138787. The next prime is 43138831. The reversal of 43138790 is 9783134.

It is a self number, because there is not a number n which added to its sum of digits gives 43138790.

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, 695 + ... + 9314.

It is an arithmetic number, because the mean of its divisors is an integer number (4864860).

Almost surely, 2^43138790 is an apocalyptic number.

43138790 is a deficient number, since it is larger than the sum of its proper divisors (34698970).

43138790 is a wasteful number, since it uses less digits than its factorization.

43138790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10447.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 43138790 is about 6568.0126370159. The cubic root of 43138790 is about 350.7163288410.

The spelling of 43138790 in words is "forty-three million, one hundred thirty-eight thousand, seven hundred ninety".