28474281 has 16 divisors (see below), whose sum is σ = 46019520. Its totient is φ = 17256960.

The previous prime is 28474273. The next prime is 28474283. The reversal of 28474281 is 18247482.

It is not a de Polignac number, because 28474281 - 2³ = 28474273 is a prime.

It is a super-2 number, since 2×28474281² = 1621569356933922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28474283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47640 + ... + 48233.

It is an arithmetic number, because the mean of its divisors is an integer number (2876220).

Almost surely, 2^28474281 is an apocalyptic number.

It is an amenable number.

28474281 is a deficient number, since it is larger than the sum of its proper divisors (17545239).

28474281 is a wasteful number, since it uses less digits than its factorization.

28474281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95893 (or 95887 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 28474281 is about 5336.1297772824. The cubic root of 28474281 is about 305.3638263322.

The spelling of 28474281 in words is "twenty-eight million, four hundred seventy-four thousand, two hundred eighty-one".