161023392 has 72 divisors (see below), whose sum is σ = 460589220. Its totient is φ = 53360640.

The previous prime is 161023367. The next prime is 161023459. The reversal of 161023392 is 293320161.

It can be written as a sum of positive squares in 2 ways, for example, as 159668496 + 1354896 = 12636^2 + 1164^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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, 50584 + ... + 53672.

Almost surely, 2^161023392 is an apocalyptic number.

161023392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161023392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230294610).

161023392 is an abundant number, since it is smaller than the sum of its proper divisors (299565828).

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

161023392 is a wasteful number, since it uses less digits than its factorization.

161023392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3286 (or 3275 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 161023392 is about 12689.4992809015. The cubic root of 161023392 is about 544.0385281247.

The spelling of 161023392 in words is "one hundred sixty-one million, twenty-three thousand, three hundred ninety-two".