7978014 has 80 divisors (see below), whose sum is σ = 20194416. Its totient is φ = 2352240.

The previous prime is 7977997. The next prime is 7978021. The reversal of 7978014 is 4108797.

It is a self number, because there is not a number n which added to its sum of digits gives 7978014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 215604 + ... + 215640.

Almost surely, 2^7978014 is an apocalyptic number.

7978014 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7978014, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10097208).

7978014 is an abundant number, since it is smaller than the sum of its proper divisors (12216402).

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

7978014 is a wasteful number, since it uses less digits than its factorization.

7978014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 7978014 is about 2824.5378383020. The cubic root of 7978014 is about 199.8166152349.

The spelling of 7978014 in words is "seven million, nine hundred seventy-eight thousand, fourteen".