7228512180 has 36 divisors (see below), whose sum is σ = 21926487492. Its totient is φ = 1927603200.

The previous prime is 7228512173. The next prime is 7228512191. The reversal of 7228512180 is 812158227.

It can be written as a sum of positive squares in 2 ways, for example, as 4297589136 + 2930923044 = 65556^2 + 54138^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20079021 + ... + 20079380.

It is an arithmetic number, because the mean of its divisors is an integer number (609069097).

Almost surely, 2^7228512180 is an apocalyptic number.

It is an amenable number.

7228512180 is an abundant number, since it is smaller than the sum of its proper divisors (14697975312).

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

7228512180 is a wasteful number, since it uses less digits than its factorization.

7228512180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40158416 (or 40158411 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 7228512180 is about 85020.6573721940. The cubic root of 7228512180 is about 1933.5243200809.

The spelling of 7228512180 in words is "seven billion, two hundred twenty-eight million, five hundred twelve thousand, one hundred eighty".