161382288 has 40 divisors (see below), whose sum is σ = 417384000. Its totient is φ = 53732224.

The previous prime is 161382281. The next prime is 161382289. The reversal of 161382288 is 882283161.

It is a super-2 number, since 2×161382288² = 52088485760229888, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (161382281) 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, 62038 + ... + 64586.

It is an arithmetic number, because the mean of its divisors is an integer number (10434600).

Almost surely, 2^161382288 is an apocalyptic number.

It is an amenable number.

161382288 is an abundant number, since it is smaller than the sum of its proper divisors (256001712).

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

161382288 is a wasteful number, since it uses less digits than its factorization.

161382288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3879 (or 3873 counting only the distinct ones).

The product of its digits is 36864, while the sum is 39.

The square root of 161382288 is about 12703.6328662316. The cubic root of 161382288 is about 544.4424205148.

The spelling of 161382288 in words is "one hundred sixty-one million, three hundred eighty-two thousand, two hundred eighty-eight".