280673471 has 8 divisors (see below), whose sum is σ = 303471504. Its totient is φ = 258048000.

The previous prime is 280673467. The next prime is 280673489. The reversal of 280673471 is 174376082.

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 280673471 - 2² = 280673467 is a prime.

It is a super-3 number, since 3×280673471³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280673401) 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, 39746 + ... + 46271.

It is an arithmetic number, because the mean of its divisors is an integer number (37933938).

Almost surely, 2^280673471 is an apocalyptic number.

280673471 is a deficient number, since it is larger than the sum of its proper divisors (22798033).

280673471 is a wasteful number, since it uses less digits than its factorization.

280673471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86281.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 280673471 is about 16753.3122396737. The cubic root of 280673471 is about 654.7373583289.

The spelling of 280673471 in words is "two hundred eighty million, six hundred seventy-three thousand, four hundred seventy-one".