161266448 has 120 divisors (see below), whose sum is σ = 387397080. Its totient is φ = 64727040.

The previous prime is 161266429. The next prime is 161266451. The reversal of 161266448 is 844662161.

161266448 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 20322064 + 140944384 = 4508^2 + 11872^2 .

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 23 ways as a sum of consecutive naturals, for example, 932090 + ... + 932262.

It is an arithmetic number, because the mean of its divisors is an integer number (3228309).

Almost surely, 2^161266448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161266448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193698540).

161266448 is an abundant number, since it is smaller than the sum of its proper divisors (226130632).

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

161266448 is a wasteful number, since it uses less digits than its factorization.

161266448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 252 counting only the distinct ones).

The product of its digits is 55296, while the sum is 38.

The square root of 161266448 is about 12699.0727220534. The cubic root of 161266448 is about 544.3121226428.

The spelling of 161266448 in words is "one hundred sixty-one million, two hundred sixty-six thousand, four hundred forty-eight".