28679418 has 24 divisors (see below), whose sum is σ = 63655956. Its totient is φ = 9326400.

The previous prime is 28679389. The next prime is 28679419. The reversal of 28679418 is 81497682.

It can be written as a sum of positive squares in 2 ways, for example, as 28547649 + 131769 = 5343^2 + 363^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28679419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18693 + ... + 20168.

Almost surely, 2^28679418 is an apocalyptic number.

28679418 is an abundant number, since it is smaller than the sum of its proper divisors (34976538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28679418 is a wasteful number, since it uses less digits than its factorization.

28679418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38910 (or 38907 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 28679418 is about 5355.3167973520. The cubic root of 28679418 is about 306.0953822866.

The spelling of 28679418 in words is "twenty-eight million, six hundred seventy-nine thousand, four hundred eighteen".