280738232 has 16 divisors (see below), whose sum is σ = 543364800. Its totient is φ = 135840960.

The previous prime is 280738231. The next prime is 280738247. The reversal of 280738232 is 232837082.

It is a junction number, because it is equal to n+sod(n) for n = 280738192 and 280738201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280738231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565757 + ... + 566252.

It is an arithmetic number, because the mean of its divisors is an integer number (33960300).

Almost surely, 2^280738232 is an apocalyptic number.

It is an amenable number.

280738232 is a deficient number, since it is larger than the sum of its proper divisors (262626568).

280738232 is a wasteful number, since it uses less digits than its factorization.

280738232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132046 (or 1132042 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 280738232 is about 16755.2449101766. The cubic root of 280738232 is about 654.7877112475.

The spelling of 280738232 in words is "two hundred eighty million, seven hundred thirty-eight thousand, two hundred thirty-two".