39457028 has 12 divisors (see below), whose sum is σ = 74361420. Its totient is φ = 18210912.

The previous prime is 39457027. The next prime is 39457031. The reversal of 39457028 is 82075493.

It can be written as a sum of positive squares in 2 ways, for example, as 10705984 + 28751044 = 3272^2 + 5362^2 .

It is a junction number, because it is equal to n+sod(n) for n = 39456982 and 39457000.

It is not an unprimeable number, because it can be changed into a prime (39457027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379343 + ... + 379446.

It is an arithmetic number, because the mean of its divisors is an integer number (6196785).

Almost surely, 2^39457028 is an apocalyptic number.

It is an amenable number.

39457028 is a deficient number, since it is larger than the sum of its proper divisors (34904392).

39457028 is a wasteful number, since it uses less digits than its factorization.

39457028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758806 (or 758804 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 39457028 is about 6281.4829459292. The cubic root of 39457028 is about 340.4406857739.

The spelling of 39457028 in words is "thirty-nine million, four hundred fifty-seven thousand, twenty-eight".