161422080 has 144 divisors (see below), whose sum is σ = 521170944. Its totient is φ = 42577920.

The previous prime is 161422069. The next prime is 161422099. The reversal of 161422080 is 80224161.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 161422080.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 487515 + ... + 487845.

Almost surely, 2^161422080 is an apocalyptic number.

161422080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161422080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260585472).

161422080 is an abundant number, since it is smaller than the sum of its proper divisors (359748864).

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

161422080 is a wasteful number, since it uses less digits than its factorization.

161422080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 161422080 is about 12705.1989358687. The cubic root of 161422080 is about 544.4871645254.

The spelling of 161422080 in words is "one hundred sixty-one million, four hundred twenty-two thousand, eighty".