161827632 has 200 divisors, whose sum is σ = 502333920. Its totient is φ = 50181120.

The previous prime is 161827621. The next prime is 161827643. The reversal of 161827632 is 236728161.

161827632 is a `hidden beast` number, since 1 + 6 + 18 + 2 + 7 + 632 = 666.

It is an interprime number because it is at equal distance from previous prime (161827621) and next prime (161827643).

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1818244 + ... + 1818332.

Almost surely, 2^161827632 is an apocalyptic number.

161827632 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 161827632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251166960).

161827632 is an abundant number, since it is smaller than the sum of its proper divisors (340506288).

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

161827632 is a wasteful number, since it uses less digits than its factorization.

161827632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 178 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 161827632 is about 12721.1490047087. The cubic root of 161827632 is about 544.9427676062.

The spelling of 161827632 in words is "one hundred sixty-one million, eight hundred twenty-seven thousand, six hundred thirty-two".