28571434 has 4 divisors (see below), whose sum is σ = 42857154. Its totient is φ = 14285716.

The previous prime is 28571423. The next prime is 28571449. The reversal of 28571434 is 43417582.

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., 24950025 + 3621409 = 4995^2 + 1903^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28571434.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7142857 + ... + 7142860.

Almost surely, 2^28571434 is an apocalyptic number.

28571434 is a deficient number, since it is larger than the sum of its proper divisors (14285720).

28571434 is a wasteful number, since it uses less digits than its factorization.

28571434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14285719.

The product of its digits is 26880, while the sum is 34.

The square root of 28571434 is about 5345.2253460448. The cubic root of 28571434 is about 305.7107280946.

The spelling of 28571434 in words is "twenty-eight million, five hundred seventy-one thousand, four hundred thirty-four".