28314634 has 4 divisors (see below), whose sum is σ = 42471954. Its totient is φ = 14157316.

The previous prime is 28314607. The next prime is 28314653. The reversal of 28314634 is 43641382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43641382 = 2 ⋅21820691.

It can be written as a sum of positive squares in only one way, i.e., 27510025 + 804609 = 5245^2 + 897^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 28314596 and 28314605.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7078657 + ... + 7078660.

Almost surely, 2^28314634 is an apocalyptic number.

28314634 is a deficient number, since it is larger than the sum of its proper divisors (14157320).

28314634 is a wasteful number, since it uses less digits than its factorization.

28314634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14157319.

The product of its digits is 13824, while the sum is 31.

The square root of 28314634 is about 5321.1496878024. The cubic root of 28314634 is about 304.7920610792.

The spelling of 28314634 in words is "twenty-eight million, three hundred fourteen thousand, six hundred thirty-four".