280232490 has 16 divisors (see below), whose sum is σ = 672558048. Its totient is φ = 74728656.

The previous prime is 280232453. The next prime is 280232503. The reversal of 280232490 is 94232082.

280232490 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 (30), and also a Moran number because the ratio is a prime number: 9341083 = 280232490 / (2 + 8 + 0 + 2 + 3 + 2 + 4 + 9 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4670512 + ... + 4670571.

It is an arithmetic number, because the mean of its divisors is an integer number (42034878).

Almost surely, 2^280232490 is an apocalyptic number.

280232490 is an abundant number, since it is smaller than the sum of its proper divisors (392325558).

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

280232490 is a wasteful number, since it uses less digits than its factorization.

280232490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9341093.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 280232490 is about 16740.1460567105. The cubic root of 280232490 is about 654.3942810424.

The spelling of 280232490 in words is "two hundred eighty million, two hundred thirty-two thousand, four hundred ninety".