161626152 has 32 divisors (see below), whose sum is σ = 421634880. Its totient is φ = 51532800.

The previous prime is 161626151. The next prime is 161626189. The reversal of 161626152 is 251626161.

It is a super-2 number, since 2×161626152² = 52246026020654208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161626151) 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, 145849 + ... + 146952.

It is an arithmetic number, because the mean of its divisors is an integer number (13176090).

Almost surely, 2^161626152 is an apocalyptic number.

161626152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161626152 is an abundant number, since it is smaller than the sum of its proper divisors (260008728).

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

161626152 is a wasteful number, since it uses less digits than its factorization.

161626152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292833 (or 292829 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 161626152 is about 12713.2274423138. The cubic root of 161626152 is about 544.7165172743.

Subtracting 161626152 from its reverse (251626161), we obtain a palindrome (90000009).

The spelling of 161626152 in words is "one hundred sixty-one million, six hundred twenty-six thousand, one hundred fifty-two".