274991616 has 120 divisors (see below), whose sum is σ = 804323520. Its totient is φ = 90433536.

The previous prime is 274991603. The next prime is 274991627. The reversal of 274991616 is 616199472.

274991616 is a `hidden beast` number, since 27 + 4 + 9 + 9 + 1 + 616 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 382105 + ... + 382823.

It is an arithmetic number, because the mean of its divisors is an integer number (6702696).

Almost surely, 2^274991616 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 274991616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402161760).

274991616 is an abundant number, since it is smaller than the sum of its proper divisors (529331904).

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

274991616 is an equidigital number, since it uses as much as digits as its factorization.

274991616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826 (or 807 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 274991616 is about 16582.8711627390. The cubic root of 274991616 is about 650.2891147775.

The spelling of 274991616 in words is "two hundred seventy-four million, nine hundred ninety-one thousand, six hundred sixteen".