28543426 has 4 divisors (see below), whose sum is σ = 42815142. Its totient is φ = 14271712.

The previous prime is 28543399. The next prime is 28543439. The reversal of 28543426 is 62434582.

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., 19811401 + 8732025 = 4451^2 + 2955^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28543391 and 28543400.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7135855 + ... + 7135858.

Almost surely, 2^28543426 is an apocalyptic number.

28543426 is a deficient number, since it is larger than the sum of its proper divisors (14271716).

28543426 is a wasteful number, since it uses less digits than its factorization.

28543426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14271715.

The product of its digits is 46080, while the sum is 34.

The square root of 28543426 is about 5342.6047954158. The cubic root of 28543426 is about 305.6108014169.

The spelling of 28543426 in words is "twenty-eight million, five hundred forty-three thousand, four hundred twenty-six".