7994520 has 96 divisors (see below), whose sum is σ = 26535600. Its totient is φ = 2086656.

The previous prime is 7994513. The next prime is 7994521. The reversal of 7994520 is 254997.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7994521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18871 + ... + 19289.

Almost surely, 2^7994520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7994520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13267800).

7994520 is an abundant number, since it is smaller than the sum of its proper divisors (18541080).

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

7994520 is a wasteful number, since it uses less digits than its factorization.

7994520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 7994520 is about 2827.4582225030. The cubic root of 7994520 is about 199.9543229021.

The spelling of 7994520 in words is "seven million, nine hundred ninety-four thousand, five hundred twenty".