161622888 has 32 divisors (see below), whose sum is σ = 461780160. Its totient is φ = 46177920.

The previous prime is 161622869. The next prime is 161622907. The reversal of 161622888 is 888226161.

It is an interprime number because it is at equal distance from previous prime (161622869) and next prime (161622907).

It is a super-2 number, since 2×161622888² = 52243915850921088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

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

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, 480853 + ... + 481188.

It is an arithmetic number, because the mean of its divisors is an integer number (14430630).

Almost surely, 2^161622888 is an apocalyptic number.

It is an amenable number.

161622888 is an abundant number, since it is smaller than the sum of its proper divisors (300157272).

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

161622888 is a wasteful number, since it uses less digits than its factorization.

161622888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962057 (or 962053 counting only the distinct ones).

The product of its digits is 73728, while the sum is 42.

The square root of 161622888 is about 12713.0990714302. The cubic root of 161622888 is about 544.7128504447.

The spelling of 161622888 in words is "one hundred sixty-one million, six hundred twenty-two thousand, eight hundred eighty-eight".