274289720 has 64 divisors (see below), whose sum is σ = 646885440. Its totient is φ = 104473600.

The previous prime is 274289711. The next prime is 274289731. The reversal of 274289720 is 27982472.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257990 + ... + 259050.

It is an arithmetic number, because the mean of its divisors is an integer number (10107585).

Almost surely, 2^274289720 is an apocalyptic number.

274289720 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 274289720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323442720).

274289720 is an abundant number, since it is smaller than the sum of its proper divisors (372595720).

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

274289720 is a wasteful number, since it uses less digits than its factorization.

274289720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376 (or 1372 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 274289720 is about 16561.6943577642. The cubic root of 274289720 is about 649.7353715689.

The spelling of 274289720 in words is "two hundred seventy-four million, two hundred eighty-nine thousand, seven hundred twenty".