161286576 has 80 divisors (see below), whose sum is σ = 456720768. Its totient is φ = 48640000.

The previous prime is 161286569. The next prime is 161286607. The reversal of 161286576 is 675682161.

161286576 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 131920 + ... + 133136.

Almost surely, 2^161286576 is an apocalyptic number.

161286576 is a gapful number since it is divisible by the number (16) 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 161286576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228360384).

161286576 is an abundant number, since it is smaller than the sum of its proper divisors (295434192).

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

161286576 is a wasteful number, since it uses less digits than its factorization.

161286576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490 (or 1484 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 161286576 is about 12699.8651961350. The cubic root of 161286576 is about 544.3347672759.

It can be divided in two parts, 1612 and 86576, that added together give a palindrome (88188).

The spelling of 161286576 in words is "one hundred sixty-one million, two hundred eighty-six thousand, five hundred seventy-six".