43740690 has 64 divisors (see below), whose sum is σ = 123863040. Its totient is φ = 9673920.

The previous prime is 43740689. The next prime is 43740703. The reversal of 43740690 is 9604734.

43740690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×43740690² = 3826495923352200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3151 + ... + 9869.

It is an arithmetic number, because the mean of its divisors is an integer number (1935360).

Almost surely, 2^43740690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43740690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61931520).

43740690 is an abundant number, since it is smaller than the sum of its proper divisors (80122350).

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

43740690 is a wasteful number, since it uses less digits than its factorization.

43740690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6767.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 43740690 is about 6613.6744703682. The cubic root of 43740690 is about 352.3399404106.

The spelling of 43740690 in words is "forty-three million, seven hundred forty thousand, six hundred ninety".