161386028 has 12 divisors (see below), whose sum is σ = 283080840. Its totient is φ = 80505792.

The previous prime is 161386013. The next prime is 161386033. The reversal of 161386028 is 820683161.

161386028 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, 44858 + ... + 48321.

It is an arithmetic number, because the mean of its divisors is an integer number (23590070).

Almost surely, 2^161386028 is an apocalyptic number.

It is an amenable number.

161386028 is a deficient number, since it is larger than the sum of its proper divisors (121694812).

161386028 is a wasteful number, since it uses less digits than its factorization.

161386028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93616 (or 93614 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 161386028 is about 12703.7800673658. The cubic root of 161386028 is about 544.4466262612.

The spelling of 161386028 in words is "one hundred sixty-one million, three hundred eighty-six thousand, twenty-eight".