37745728 has 28 divisors (see below), whose sum is σ = 75458320. Its totient is φ = 18732672.

The previous prime is 37745717. The next prime is 37745731. The reversal of 37745728 is 82754773.

37745728 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-3 number, since 3×37745728³ (a number of 24 digits) contains 333 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 3 ways as a sum of consecutive naturals, for example, 6775 + ... + 11017.

It is an arithmetic number, because the mean of its divisors is an integer number (2694940).

Almost surely, 2^37745728 is an apocalyptic number.

It is an amenable number.

37745728 is a deficient number, since it is larger than the sum of its proper divisors (37712592).

37745728 is a wasteful number, since it uses less digits than its factorization.

37745728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4394 (or 4384 counting only the distinct ones).

The product of its digits is 329280, while the sum is 43.

The square root of 37745728 is about 6143.7552034566. The cubic root of 37745728 is about 335.4459880046.

The spelling of 37745728 in words is "thirty-seven million, seven hundred forty-five thousand, seven hundred twenty-eight".