169213728 has 48 divisors (see below), whose sum is σ = 456200640. Its totient is φ = 54878976.

The previous prime is 169213679. The next prime is 169213739. The reversal of 169213728 is 827312961.

169213728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

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, 20268 + ... + 27371.

It is an arithmetic number, because the mean of its divisors is an integer number (9504180).

Almost surely, 2^169213728 is an apocalyptic number.

It is an amenable number.

169213728 is an abundant number, since it is smaller than the sum of its proper divisors (286986912).

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

169213728 is a wasteful number, since it uses less digits than its factorization.

169213728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47689 (or 47681 counting only the distinct ones).

The product of its digits is 36288, while the sum is 39.

The square root of 169213728 is about 13008.2177103553. The cubic root of 169213728 is about 553.1104510329.

The spelling of 169213728 in words is "one hundred sixty-nine million, two hundred thirteen thousand, seven hundred twenty-eight".