7900180 has 48 divisors (see below), whose sum is σ = 17554320. Its totient is φ = 2981888.

The previous prime is 7900177. The next prime is 7900187. The reversal of 7900180 is 810097.

It can be written as a sum of positive squares in 8 ways, for example, as 1119364 + 6780816 = 1058^2 + 2604^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7900187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30612 + ... + 30868.

It is an arithmetic number, because the mean of its divisors is an integer number (365715).

Almost surely, 2^7900180 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 7900180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8777160).

7900180 is an abundant number, since it is smaller than the sum of its proper divisors (9654140).

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

7900180 is a wasteful number, since it uses less digits than its factorization.

7900180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 7900180 is about 2810.7258848917. The cubic root of 7900180 is about 199.1646827492.

The spelling of 7900180 in words is "seven million, nine hundred thousand, one hundred eighty".