161650824 has 32 divisors (see below), whose sum is σ = 427900320. Its totient is φ = 50713856.

The previous prime is 161650799. The next prime is 161650837. The reversal of 161650824 is 428056161.

It is a super-2 number, since 2×161650824² = 52261977799757952, which contains 22 as substring.

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, 197694 + ... + 198509.

It is an arithmetic number, because the mean of its divisors is an integer number (13371885).

Almost surely, 2^161650824 is an apocalyptic number.

It is an amenable number.

161650824 is an abundant number, since it is smaller than the sum of its proper divisors (266249496).

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

161650824 is a wasteful number, since it uses less digits than its factorization.

161650824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396229 (or 396225 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 161650824 is about 12714.1977332429. The cubic root of 161650824 is about 544.7442325955.

The spelling of 161650824 in words is "one hundred sixty-one million, six hundred fifty thousand, eight hundred twenty-four".