281474740 has 48 divisors (see below), whose sum is σ = 632459520. Its totient is φ = 104906880.

The previous prime is 281474731. The next prime is 281474741. The reversal of 281474740 is 47474182.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 281474740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281474741) 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, 17109 + ... + 29251.

It is an arithmetic number, because the mean of its divisors is an integer number (13176240).

Almost surely, 2^281474740 is an apocalyptic number.

281474740 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 281474740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316229760).

281474740 is an abundant number, since it is smaller than the sum of its proper divisors (350984780).

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

281474740 is a wasteful number, since it uses less digits than its factorization.

281474740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12232 (or 12230 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 37.

The square root of 281474740 is about 16777.2089454712. The cubic root of 281474740 is about 655.3598162883.

The spelling of 281474740 in words is "two hundred eighty-one million, four hundred seventy-four thousand, seven hundred forty".