39640248 has 48 divisors (see below), whose sum is σ = 108365400. Its totient is φ = 13089600.

The previous prime is 39640217. The next prime is 39640253. The reversal of 39640248 is 84204693.

It is a happy number.

39640248 is a `hidden beast` number, since 3 + 9 + 640 + 2 + 4 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5323 + ... + 10373.

Almost surely, 2^39640248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39640248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54182700).

39640248 is an abundant number, since it is smaller than the sum of its proper divisors (68725152).

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

39640248 is a wasteful number, since it uses less digits than its factorization.

39640248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5172 (or 5165 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 39640248 is about 6296.0501903972. The cubic root of 39640248 is about 340.9668213893.

The spelling of 39640248 in words is "thirty-nine million, six hundred forty thousand, two hundred forty-eight".