280725474 has 8 divisors (see below), whose sum is σ = 561450960. Its totient is φ = 93575156.

The previous prime is 280725421. The next prime is 280725509. The reversal of 280725474 is 474527082.

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

280725474 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23393784 + ... + 23393795.

It is an arithmetic number, because the mean of its divisors is an integer number (70181370).

Almost surely, 2^280725474 is an apocalyptic number.

280725474 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

280725474 is a wasteful number, since it uses less digits than its factorization.

280725474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46787584.

The product of its (nonzero) digits is 125440, while the sum is 39.

The square root of 280725474 is about 16754.8641892437. The cubic root of 280725474 is about 654.7777922705. Note that the first 4 decimals are identical.

The spelling of 280725474 in words is "two hundred eighty million, seven hundred twenty-five thousand, four hundred seventy-four".