274242820 has 48 divisors (see below), whose sum is σ = 596090880. Its totient is φ = 105912576.

The previous prime is 274242811. The next prime is 274242841. The reversal of 274242820 is 28242472.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74749 + ... + 78331.

It is an arithmetic number, because the mean of its divisors is an integer number (12418560).

Almost surely, 2^274242820 is an apocalyptic number.

274242820 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 274242820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298045440).

274242820 is an abundant number, since it is smaller than the sum of its proper divisors (321848060).

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

274242820 is a wasteful number, since it uses less digits than its factorization.

274242820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3724 (or 3722 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 31.

The square root of 274242820 is about 16560.2783793027. The cubic root of 274242820 is about 649.6983373387.

The spelling of 274242820 in words is "two hundred seventy-four million, two hundred forty-two thousand, eight hundred twenty".