44672157 has 6 divisors (see below), whose sum is σ = 64526462. Its totient is φ = 29781432.

The previous prime is 44672149. The next prime is 44672161. The reversal of 44672157 is 75127644.

44672157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 39012516 + 5659641 = 6246^2 + 2379^2 .

It is not a de Polignac number, because 44672157 - 2³ = 44672149 is a prime.

It is a super-2 number, since 2×44672157² = 3991203222065298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44672167) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2481778 + ... + 2481795.

Almost surely, 2^44672157 is an apocalyptic number.

It is an amenable number.

44672157 is a deficient number, since it is larger than the sum of its proper divisors (19854305).

44672157 is a wasteful number, since it uses less digits than its factorization.

44672157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4963579 (or 4963576 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 44672157 is about 6683.7232887067. The cubic root of 44672157 is about 354.8234445745.

The spelling of 44672157 in words is "forty-four million, six hundred seventy-two thousand, one hundred fifty-seven".