39657648 has 20 divisors (see below), whose sum is σ = 102449048. Its totient is φ = 13219200.

The previous prime is 39657641. The next prime is 39657659. The reversal of 39657648 is 84675693.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 826201 = 39657648 / (3 + 9 + 6 + 5 + 7 + 6 + 4 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 39657597 and 39657606.

It is not an unprimeable number, because it can be changed into a prime (39657641) 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, 413053 + ... + 413148.

Almost surely, 2^39657648 is an apocalyptic number.

It is an amenable number.

39657648 is an abundant number, since it is smaller than the sum of its proper divisors (62791400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39657648 is a wasteful number, since it uses less digits than its factorization.

39657648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826212 (or 826206 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The square root of 39657648 is about 6297.4318575114. The cubic root of 39657648 is about 341.0167029712.

The spelling of 39657648 in words is "thirty-nine million, six hundred fifty-seven thousand, six hundred forty-eight".