280030061 has 8 divisors (see below), whose sum is σ = 296424480. Its totient is φ = 264084912.

The previous prime is 280030057. The next prime is 280030063. The reversal of 280030061 is 160030082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 280030061 - 2² = 280030057 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280030063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111035 + ... + 113528.

It is an arithmetic number, because the mean of its divisors is an integer number (37053060).

Almost surely, 2^280030061 is an apocalyptic number.

It is an amenable number.

280030061 is a deficient number, since it is larger than the sum of its proper divisors (16394419).

280030061 is a wasteful number, since it uses less digits than its factorization.

280030061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224635.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 280030061 is about 16734.0987507544. The cubic root of 280030061 is about 654.2366734676.

The spelling of 280030061 in words is "two hundred eighty million, thirty thousand, sixty-one".