280742227 has 8 divisors (see below), whose sum is σ = 287529264. Its totient is φ = 273967008.

The previous prime is 280742207. The next prime is 280742249. The reversal of 280742227 is 722247082.

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 280742227 - 2¹⁹ = 280217939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 280742192 and 280742201.

It is not an unprimeable number, because it can be changed into a prime (280742207) 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, 62013 + ... + 66385.

It is an arithmetic number, because the mean of its divisors is an integer number (35941158).

Almost surely, 2^280742227 is an apocalyptic number.

280742227 is a deficient number, since it is larger than the sum of its proper divisors (6787037).

280742227 is a wasteful number, since it uses less digits than its factorization.

280742227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5909.

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 280742227 is about 16755.3641261537. The cubic root of 280742227 is about 654.7908171830.

The spelling of 280742227 in words is "two hundred eighty million, seven hundred forty-two thousand, two hundred twenty-seven".