161279448 has 192 divisors, whose sum is σ = 485184000. Its totient is φ = 44478720.

The previous prime is 161279441. The next prime is 161279449. The reversal of 161279448 is 844972161.

161279448 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161279448² = 52022120694369408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161279441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2041473 + ... + 2041551.

It is an arithmetic number, because the mean of its divisors is an integer number (2527000).

Almost surely, 2^161279448 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 161279448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242592000).

161279448 is an abundant number, since it is smaller than the sum of its proper divisors (323904552).

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

161279448 is a wasteful number, since it uses less digits than its factorization.

161279448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 151 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 161279448 is about 12699.5845601342. The cubic root of 161279448 is about 544.3267482672.

The spelling of 161279448 in words is "one hundred sixty-one million, two hundred seventy-nine thousand, four hundred forty-eight".