109161472 has 88 divisors (see below), whose sum is σ = 253565984. Its totient is φ = 46006272.

The previous prime is 109161469. The next prime is 109161487. The reversal of 109161472 is 274161901.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 695218 + ... + 695374.

Almost surely, 2^109161472 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 109161472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126782992).

109161472 is an abundant number, since it is smaller than the sum of its proper divisors (144404512).

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

109161472 is an equidigital number, since it uses as much as digits as its factorization.

109161472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 109161472 is about 10448.0367533810. The cubic root of 109161472 is about 477.9213820037.

The spelling of 109161472 in words is "one hundred nine million, one hundred sixty-one thousand, four hundred seventy-two".