161588828 has 6 divisors (see below), whose sum is σ = 282780456. Its totient is φ = 80794412.

The previous prime is 161588827. The next prime is 161588837. The reversal of 161588828 is 828885161.

It is a super-2 number, since 2×161588828² = 52221898668827168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161588827) 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 as a sum of consecutive naturals, namely, 20198600 + ... + 20198607.

It is an arithmetic number, because the mean of its divisors is an integer number (47130076).

Almost surely, 2^161588828 is an apocalyptic number.

It is an amenable number.

161588828 is a deficient number, since it is larger than the sum of its proper divisors (121191628).

161588828 is a wasteful number, since it uses less digits than its factorization.

161588828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40397211 (or 40397209 counting only the distinct ones).

The product of its digits is 245760, while the sum is 47.

The square root of 161588828 is about 12711.7594376231. The cubic root of 161588828 is about 544.6745839521.

The spelling of 161588828 in words is "one hundred sixty-one million, five hundred eighty-eight thousand, eight hundred twenty-eight".