44257213 has 48 divisors (see below), whose sum is σ = 63244800. Its totient is φ = 29989440.

The previous prime is 44257207. The next prime is 44257231. The reversal of 44257213 is 31275244.

It is a de Polignac number, because none of the positive numbers 2^k-44257213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44257013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 247158 + ... + 247336.

It is an arithmetic number, because the mean of its divisors is an integer number (1317600).

Almost surely, 2^44257213 is an apocalyptic number.

It is an amenable number.

44257213 is a deficient number, since it is larger than the sum of its proper divisors (18987587).

44257213 is a wasteful number, since it uses less digits than its factorization.

44257213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 229 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 44257213 is about 6652.6094880130. The cubic root of 44257213 is about 353.7214151966.

The spelling of 44257213 in words is "forty-four million, two hundred fifty-seven thousand, two hundred thirteen".