161827320 has 32 divisors (see below), whose sum is σ = 485482320. Its totient is φ = 43153920.

The previous prime is 161827283. The next prime is 161827321. The reversal of 161827320 is 23728161.

161827320 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 (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161827321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674161 + ... + 674400.

Almost surely, 2^161827320 is an apocalyptic number.

161827320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161827320 is an abundant number, since it is smaller than the sum of its proper divisors (323655000).

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

161827320 is a wasteful number, since it uses less digits than its factorization.

161827320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348575 (or 1348571 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 161827320 is about 12721.1367416595. The cubic root of 161827320 is about 544.9424173935.

The spelling of 161827320 in words is "one hundred sixty-one million, eight hundred twenty-seven thousand, three hundred twenty".