28626874 has 4 divisors (see below), whose sum is σ = 42940314. Its totient is φ = 14313436.

The previous prime is 28626869. The next prime is 28626907. The reversal of 28626874 is 47862682.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 24453025 + 4173849 = 4945^2 + 2043^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28626874.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7156717 + ... + 7156720.

Almost surely, 2^28626874 is an apocalyptic number.

28626874 is a deficient number, since it is larger than the sum of its proper divisors (14313440).

28626874 is a wasteful number, since it uses less digits than its factorization.

28626874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14313439.

The product of its digits is 258048, while the sum is 43.

The square root of 28626874 is about 5350.4087694306. The cubic root of 28626874 is about 305.9083339995.

The spelling of 28626874 in words is "twenty-eight million, six hundred twenty-six thousand, eight hundred seventy-four".