39428757 has 12 divisors (see below), whose sum is σ = 58342284. Its totient is φ = 25644480.

The previous prime is 39428749. The next prime is 39428761. The reversal of 39428757 is 75782493.

It can be written as a sum of positive squares in 2 ways, for example, as 2047761 + 37380996 = 1431^2 + 6114^2 .

It is not a de Polignac number, because 39428757 - 2³ = 39428749 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39428747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53058 + ... + 53795.

It is an arithmetic number, because the mean of its divisors is an integer number (4861857).

Almost surely, 2^39428757 is an apocalyptic number.

It is an amenable number.

39428757 is a deficient number, since it is larger than the sum of its proper divisors (18913527).

39428757 is a wasteful number, since it uses less digits than its factorization.

39428757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106900 (or 106897 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 39428757 is about 6279.2321982867. The cubic root of 39428757 is about 340.3593576497.

The spelling of 39428757 in words is "thirty-nine million, four hundred twenty-eight thousand, seven hundred fifty-seven".