7938078 has 16 divisors (see below), whose sum is σ = 16078080. Its totient is φ = 2612376.

The previous prime is 7938071. The next prime is 7938079. The reversal of 7938078 is 8708397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7938071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7900 + ... + 8847.

It is an arithmetic number, because the mean of its divisors is an integer number (1004880).

Almost surely, 2^7938078 is an apocalyptic number.

7938078 is an abundant number, since it is smaller than the sum of its proper divisors (8140002).

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

7938078 is a wasteful number, since it uses less digits than its factorization.

7938078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16831.

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

The square root of 7938078 is about 2817.4594939413. The cubic root of 7938078 is about 199.4826462126.

Adding to 7938078 its sum of digits (42), we get a triangular number (7938120 = T₃₉₈₄).

The spelling of 7938078 in words is "seven million, nine hundred thirty-eight thousand, seventy-eight".