274830840 has 128 divisors (see below), whose sum is σ = 970056000. Its totient is φ = 68972544.

The previous prime is 274830833. The next prime is 274830863. The reversal of 274830840 is 48038472.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 274830795 and 274830804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10876 + ... + 25844.

Almost surely, 2^274830840 is an apocalyptic number.

274830840 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 274830840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (485028000).

274830840 is an abundant number, since it is smaller than the sum of its proper divisors (695225160).

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

274830840 is a wasteful number, since it uses less digits than its factorization.

274830840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15006 (or 14996 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 274830840 is about 16578.0228012873. The cubic root of 274830840 is about 650.1623578648.

The spelling of 274830840 in words is "two hundred seventy-four million, eight hundred thirty thousand, eight hundred forty".