161632230 has 16 divisors (see below), whose sum is σ = 387917424. Its totient is φ = 43101920.

The previous prime is 161632213. The next prime is 161632241. The reversal of 161632230 is 32236161.

It is a happy number.

It is a super-2 number, since 2×161632230² = 52249955549545800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161632230.

It is a congruent number.

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, 2693841 + ... + 2693900.

It is an arithmetic number, because the mean of its divisors is an integer number (24244839).

Almost surely, 2^161632230 is an apocalyptic number.

161632230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161632230 is an abundant number, since it is smaller than the sum of its proper divisors (226285194).

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

161632230 is a wasteful number, since it uses less digits than its factorization.

161632230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5387751.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 161632230 is about 12713.4664824351. The cubic root of 161632230 is about 544.7233452648.

Adding to 161632230 its reverse (32236161), we get a palindrome (193868391).

The spelling of 161632230 in words is "one hundred sixty-one million, six hundred thirty-two thousand, two hundred thirty".