280494374 has 4 divisors (see below), whose sum is σ = 420741564. Its totient is φ = 140247186.

The previous prime is 280494371. The next prime is 280494413. The reversal of 280494374 is 473494082.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280494371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70123592 + ... + 70123595.

It is an arithmetic number, because the mean of its divisors is an integer number (105185391).

Almost surely, 2^280494374 is an apocalyptic number.

280494374 is a deficient number, since it is larger than the sum of its proper divisors (140247190).

280494374 is a wasteful number, since it uses less digits than its factorization.

280494374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140247189.

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 280494374 is about 16747.9662645946. The cubic root of 280494374 is about 654.5980666382.

It can be divided in two parts, 28049 and 4374, that added together give a palindrome (32423).

The spelling of 280494374 in words is "two hundred eighty million, four hundred ninety-four thousand, three hundred seventy-four".