280529130 has 32 divisors (see below), whose sum is σ = 769451904. Its totient is φ = 64120896.

The previous prime is 280529113. The next prime is 280529131. The reversal of 280529130 is 31925082.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (280529131) 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, 667717 + ... + 668136.

It is an arithmetic number, because the mean of its divisors is an integer number (24045372).

Almost surely, 2^280529130 is an apocalyptic number.

280529130 is an abundant number, since it is smaller than the sum of its proper divisors (488922774).

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

280529130 is a wasteful number, since it uses less digits than its factorization.

280529130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335870.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 280529130 is about 16749.0038509757. The cubic root of 280529130 is about 654.6251025587.

The spelling of 280529130 in words is "two hundred eighty million, five hundred twenty-nine thousand, one hundred thirty".