2820120172 has 12 divisors (see below), whose sum is σ = 4937223256. Its totient is φ = 1409484960.

The previous prime is 2820120151. The next prime is 2820120221. The reversal of 2820120172 is 2710210282.

2820120172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132654 + ... + 152437.

Almost surely, 2^2820120172 is an apocalyptic number.

It is an amenable number.

2820120172 is a deficient number, since it is larger than the sum of its proper divisors (2117103084).

2820120172 is a wasteful number, since it uses less digits than its factorization.

2820120172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287568 (or 287566 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 2820120172 is about 53104.8036621924. The cubic root of 2820120172 is about 1412.8277126376.

The spelling of 2820120172 in words is "two billion, eight hundred twenty million, one hundred twenty thousand, one hundred seventy-two".