161627244 has 12 divisors (see below), whose sum is σ = 377130264. Its totient is φ = 53875744.

The previous prime is 161627201. The next prime is 161627251. The reversal of 161627244 is 442726161.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×161627244² = 52246732006071072, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6734457 + ... + 6734480.

It is an arithmetic number, because the mean of its divisors is an integer number (31427522).

Almost surely, 2^161627244 is an apocalyptic number.

It is an amenable number.

161627244 is an abundant number, since it is smaller than the sum of its proper divisors (215503020).

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

161627244 is a wasteful number, since it uses less digits than its factorization.

161627244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13468944 (or 13468942 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 161627244 is about 12713.2703896362. The cubic root of 161627244 is about 544.7177440334.

The spelling of 161627244 in words is "one hundred sixty-one million, six hundred twenty-seven thousand, two hundred forty-four".