281052072 has 128 divisors (see below), whose sum is σ = 898867200. Its totient is φ = 79704000.

The previous prime is 281052061. The next prime is 281052091. The reversal of 281052072 is 270250182.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227697 + ... + 228927.

It is an arithmetic number, because the mean of its divisors is an integer number (7022400).

Almost surely, 2^281052072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 281052072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (449433600).

281052072 is an abundant number, since it is smaller than the sum of its proper divisors (617815128).

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

281052072 is a wasteful number, since it uses less digits than its factorization.

281052072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404 (or 1394 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 281052072 is about 16764.6077198365. The cubic root of 281052072 is about 655.0316182317.

The spelling of 281052072 in words is "two hundred eighty-one million, fifty-two thousand, seventy-two".