161284896 has 36 divisors (see below), whose sum is σ = 458654742. Its totient is φ = 53761536.

The previous prime is 161284843. The next prime is 161284913. The reversal of 161284896 is 698482161.

161284896 is a `hidden beast` number, since 161 + 2 + 8 + 489 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 143137296 + 18147600 = 11964^2 + 4260^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 279721 + ... + 280296.

Almost surely, 2^161284896 is an apocalyptic number.

161284896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161284896 is an abundant number, since it is smaller than the sum of its proper divisors (297369846).

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

161284896 is a wasteful number, since it uses less digits than its factorization.

161284896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560033 (or 560022 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 161284896 is about 12699.7990535284. The cubic root of 161284896 is about 544.3328772951.

The spelling of 161284896 in words is "one hundred sixty-one million, two hundred eighty-four thousand, eight hundred ninety-six".