274899780 has 72 divisors (see below), whose sum is σ = 842174424. Its totient is φ = 72576000.

The previous prime is 274899767. The next prime is 274899791. The reversal of 274899780 is 87998472.

It can be written as a sum of positive squares in 4 ways, for example, as 54199044 + 220700736 = 7362^2 + 14856^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10620 + ... + 25740.

It is an arithmetic number, because the mean of its divisors is an integer number (11696867).

Almost surely, 2^274899780 is an apocalyptic number.

274899780 is a gapful number since it is divisible by the number (20) 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 274899780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (421087212).

274899780 is an abundant number, since it is smaller than the sum of its proper divisors (567274644).

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

274899780 is a wasteful number, since it uses less digits than its factorization.

274899780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15237 (or 15232 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The square root of 274899780 is about 16580.1019297229. The cubic root of 274899780 is about 650.2167166910.

The spelling of 274899780 in words is "two hundred seventy-four million, eight hundred ninety-nine thousand, seven hundred eighty".