7978038 has 8 divisors (see below), whose sum is σ = 15956088. Its totient is φ = 2659344.

The previous prime is 7978021. The next prime is 7978063. The reversal of 7978038 is 8308797.

It is a sphenic number, since it is the product of 3 distinct primes.

7978038 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664831 + ... + 664842.

It is an arithmetic number, because the mean of its divisors is an integer number (1994511).

Almost surely, 2^7978038 is an apocalyptic number.

7978038 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7978038 is a wasteful number, since it uses less digits than its factorization.

7978038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329678.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 7978038 is about 2824.5420867815. The cubic root of 7978038 is about 199.8168156019.

The spelling of 7978038 in words is "seven million, nine hundred seventy-eight thousand, thirty-eight".