162561384 has 64 divisors (see below), whose sum is σ = 454680000. Its totient is φ = 53812800.

The previous prime is 162561383. The next prime is 162561407. The reversal of 162561384 is 483165261.

It is a happy number.

162561384 is a `hidden beast` number, since 1 + 62 + 561 + 38 + 4 = 666.

162561384 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (162561383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29659 + ... + 34709.

It is an arithmetic number, because the mean of its divisors is an integer number (7104375).

Almost surely, 2^162561384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 162561384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227340000).

162561384 is an abundant number, since it is smaller than the sum of its proper divisors (292118616).

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

162561384 is a wasteful number, since it uses less digits than its factorization.

162561384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5215 (or 5205 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 162561384 is about 12749.9562352190. The cubic root of 162561384 is about 545.7651447376.

The spelling of 162561384 in words is "one hundred sixty-two million, five hundred sixty-one thousand, three hundred eighty-four".