28660274 has 16 divisors (see below), whose sum is σ = 45184128. Its totient is φ = 13617072.

The previous prime is 28660243. The next prime is 28660279. The reversal of 28660274 is 47206682.

It is a super-2 number, since 2×28660274² = 1642822611510152, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28660279) 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, 1322 + ... + 7685.

It is an arithmetic number, because the mean of its divisors is an integer number (2824008).

Almost surely, 2^28660274 is an apocalyptic number.

28660274 is a deficient number, since it is larger than the sum of its proper divisors (16523854).

28660274 is a wasteful number, since it uses less digits than its factorization.

28660274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9089.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 28660274 is about 5353.5291163867. The cubic root of 28660274 is about 306.0272591662.

The spelling of 28660274 in words is "twenty-eight million, six hundred sixty thousand, two hundred seventy-four".