28518274 has 8 divisors (see below), whose sum is σ = 42858108. Its totient is φ = 14232240.

The previous prime is 28518257. The next prime is 28518283. The reversal of 28518274 is 47281582.

It can be written as a sum of positive squares in 2 ways, for example, as 28164249 + 354025 = 5307^2 + 595^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12097 + ... + 14260.

Almost surely, 2^28518274 is an apocalyptic number.

28518274 is a deficient number, since it is larger than the sum of its proper divisors (14339834).

28518274 is a wasteful number, since it uses less digits than its factorization.

28518274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26900.

The product of its digits is 35840, while the sum is 37.

The square root of 28518274 is about 5340.2503686625. The cubic root of 28518274 is about 305.5210086243.

The spelling of 28518274 in words is "twenty-eight million, five hundred eighteen thousand, two hundred seventy-four".