162021772 has 24 divisors (see below), whose sum is σ = 309713040. Its totient is φ = 73551360.

The previous prime is 162021767. The next prime is 162021799. The reversal of 162021772 is 277120261.

162021772 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 162021772.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41104 + ... + 44872.

It is an arithmetic number, because the mean of its divisors is an integer number (12904710).

Almost surely, 2^162021772 is an apocalyptic number.

It is an amenable number.

162021772 is a deficient number, since it is larger than the sum of its proper divisors (147691268).

162021772 is a wasteful number, since it uses less digits than its factorization.

162021772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4761 (or 4759 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 162021772 is about 12728.7773175588. Note that the first 3 decimals coincide. The cubic root of 162021772 is about 545.1605979591.

The spelling of 162021772 in words is "one hundred sixty-two million, twenty-one thousand, seven hundred seventy-two".