161330208 has 96 divisors (see below), whose sum is σ = 458752896. Its totient is φ = 49348608.

The previous prime is 161330201. The next prime is 161330233. The reversal of 161330208 is 802033161.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is not an unprimeable number, because it can be changed into a prime (161330201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320485 + ... + 320987.

It is an arithmetic number, because the mean of its divisors is an integer number (4778676).

Almost surely, 2^161330208 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 161330208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229376448).

161330208 is an abundant number, since it is smaller than the sum of its proper divisors (297422688).

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

161330208 is a wasteful number, since it uses less digits than its factorization.

161330208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 161330208 is about 12701.5828934822. The cubic root of 161330208 is about 544.3838481806.

Adding to 161330208 its reverse (802033161), we get a palindrome (963363369).

The spelling of 161330208 in words is "one hundred sixty-one million, three hundred thirty thousand, two hundred eight".