7920252 has 72 divisors (see below), whose sum is σ = 21245952. Its totient is φ = 2484000.

The previous prime is 7920251. The next prime is 7920259. The reversal of 7920252 is 2520297.

It is a happy number.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7920251) 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, 52377 + ... + 52527.

Almost surely, 2^7920252 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 7920252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10622976).

7920252 is an abundant number, since it is smaller than the sum of its proper divisors (13325700).

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

7920252 is a wasteful number, since it uses less digits than its factorization.

7920252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 7920252 is about 2814.2942276884. The cubic root of 7920252 is about 199.3332127778. Note that the first 3 decimals are identical.

The spelling of 7920252 in words is "seven million, nine hundred twenty thousand, two hundred fifty-two".