45638740 has 48 divisors (see below), whose sum is σ = 112218624. Its totient is φ = 15264000.

The previous prime is 45638731. The next prime is 45638753. The reversal of 45638740 is 4783654.

It is a self number, because there is not a number n which added to its sum of digits gives 45638740.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1765 + ... + 9715.

It is an arithmetic number, because the mean of its divisors is an integer number (2337888).

Almost surely, 2^45638740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45638740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56109312).

45638740 is an abundant number, since it is smaller than the sum of its proper divisors (66579884).

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

45638740 is a wasteful number, since it uses less digits than its factorization.

45638740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8008 (or 8006 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 45638740 is about 6755.6450469219. The cubic root of 45638740 is about 357.3643412456.

The spelling of 45638740 in words is "forty-five million, six hundred thirty-eight thousand, seven hundred forty".