274765220 has 48 divisors (see below), whose sum is σ = 612623088. Its totient is φ = 103157760.

The previous prime is 274765181. The next prime is 274765223. The reversal of 274765220 is 22567472.

It can be written as a sum of positive squares in 8 ways, for example, as 27709696 + 247055524 = 5264^2 + 15718^2 .

It is a super-2 number, since 2×274765220² = 150991852243296800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (274765223) 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, 155864 + ... + 157616.

It is an arithmetic number, because the mean of its divisors is an integer number (12762981).

Almost surely, 2^274765220 is an apocalyptic number.

274765220 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 274765220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306311544).

274765220 is an abundant number, since it is smaller than the sum of its proper divisors (337857868).

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

274765220 is a wasteful number, since it uses less digits than its factorization.

274765220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240 (or 2238 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 274765220 is about 16576.0435568926. The cubic root of 274765220 is about 650.1106083960.

The spelling of 274765220 in words is "two hundred seventy-four million, seven hundred sixty-five thousand, two hundred twenty".