38978648 has 8 divisors (see below), whose sum is σ = 73084980. Its totient is φ = 19489320.

The previous prime is 38978623. The next prime is 38978677. The reversal of 38978648 is 84687983.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 38978648.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2436158 + ... + 2436173.

Almost surely, 2^38978648 is an apocalyptic number.

It is an amenable number.

38978648 is a deficient number, since it is larger than the sum of its proper divisors (34106332).

38978648 is a wasteful number, since it uses less digits than its factorization.

38978648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4872337 (or 4872333 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 53.

The square root of 38978648 is about 6243.2882361781. The cubic root of 38978648 is about 339.0592448441.

The spelling of 38978648 in words is "thirty-eight million, nine hundred seventy-eight thousand, six hundred forty-eight".