161850240 has 96 divisors (see below), whose sum is σ = 558909000. Its totient is φ = 43158528.

The previous prime is 161850229. The next prime is 161850253. The reversal of 161850240 is 42058161.

161850240 is a `hidden beast` number, since 1 + 618 + 5 + 0 + 2 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8290 + ... + 19809.

Almost surely, 2^161850240 is an apocalyptic number.

161850240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161850240 is an abundant number, since it is smaller than the sum of its proper divisors (397058760).

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

161850240 is a wasteful number, since it uses less digits than its factorization.

161850240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28124 (or 28109 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 161850240 is about 12722.0375726532. The cubic root of 161850240 is about 544.9681433558.

The spelling of 161850240 in words is "one hundred sixty-one million, eight hundred fifty thousand, two hundred forty".