161285230 has 16 divisors (see below), whose sum is σ = 290458224. Its totient is φ = 64481920.

The previous prime is 161285227. The next prime is 161285237. The reversal of 161285230 is 32582161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161285237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35910 + ... + 40150.

It is an arithmetic number, because the mean of its divisors is an integer number (18153639).

Almost surely, 2^161285230 is an apocalyptic number.

161285230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161285230 is a deficient number, since it is larger than the sum of its proper divisors (129172994).

161285230 is a wasteful number, since it uses less digits than its factorization.

161285230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8051.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 161285230 is about 12699.8122033359. The cubic root of 161285230 is about 544.3332530423. Note that the first 3 decimals are identical.

The spelling of 161285230 in words is "one hundred sixty-one million, two hundred eighty-five thousand, two hundred thirty".