38978874 has 64 divisors (see below), whose sum is σ = 95247360. Its totient is φ = 11718000.

The previous prime is 38978827. The next prime is 38978921. The reversal of 38978874 is 47887983.

It is an interprime number because it is at equal distance from previous prime (38978827) and next prime (38978921).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 38978874.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125179 + ... + 125489.

It is an arithmetic number, because the mean of its divisors is an integer number (1488240).

Almost surely, 2^38978874 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38978874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47623680).

38978874 is an abundant number, since it is smaller than the sum of its proper divisors (56268486).

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

38978874 is a wasteful number, since it uses less digits than its factorization.

38978874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544 (or 538 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 38978874 is about 6243.3063355885. The cubic root of 38978874 is about 339.0599001365.

The spelling of 38978874 in words is "thirty-eight million, nine hundred seventy-eight thousand, eight hundred seventy-four".