280953072 has 60 divisors (see below), whose sum is σ = 796263520. Its totient is φ = 92461824.

The previous prime is 280953047. The next prime is 280953077. The reversal of 280953072 is 270359082.

It is a happy number.

280953072 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280953077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 973 + ... + 23724.

Almost surely, 2^280953072 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 280953072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (398131760).

280953072 is an abundant number, since it is smaller than the sum of its proper divisors (515310448).

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

280953072 is a wasteful number, since it uses less digits than its factorization.

280953072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24790 (or 24781 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 280953072 is about 16761.6548109069. The cubic root of 280953072 is about 654.9546980303.

The spelling of 280953072 in words is "two hundred eighty million, nine hundred fifty-three thousand, seventy-two".