39478656 has 128 divisors (see below), whose sum is σ = 126316800. Its totient is φ = 10672128.

The previous prime is 39478643. The next prime is 39478661. The reversal of 39478656 is 65687493.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50686 + ... + 51458.

It is an arithmetic number, because the mean of its divisors is an integer number (986850).

Almost surely, 2^39478656 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 39478656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63158400).

39478656 is an abundant number, since it is smaller than the sum of its proper divisors (86838144).

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

39478656 is a wasteful number, since it uses less digits than its factorization.

39478656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816 (or 804 counting only the distinct ones).

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

The square root of 39478656 is about 6283.2042780734. The cubic root of 39478656 is about 340.5028775355.

The spelling of 39478656 in words is "thirty-nine million, four hundred seventy-eight thousand, six hundred fifty-six".