28275554 has 4 divisors (see below), whose sum is σ = 42413334. Its totient is φ = 14137776.

The previous prime is 28275547. The next prime is 28275563. The reversal of 28275554 is 45557282.

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., 25230529 + 3045025 = 5023^2 + 1745^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7068887 + ... + 7068890.

Almost surely, 2^28275554 is an apocalyptic number.

28275554 is a deficient number, since it is larger than the sum of its proper divisors (14137780).

28275554 is a wasteful number, since it uses less digits than its factorization.

28275554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14137779.

The product of its digits is 112000, while the sum is 38.

The square root of 28275554 is about 5317.4762810943. The cubic root of 28275554 is about 304.6517713389.

The spelling of 28275554 in words is "twenty-eight million, two hundred seventy-five thousand, five hundred fifty-four".