28572254 has 4 divisors (see below), whose sum is σ = 42858384. Its totient is φ = 14286126.

The previous prime is 28572239. The next prime is 28572259. The reversal of 28572254 is 45227582.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28572259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7143062 + ... + 7143065.

It is an arithmetic number, because the mean of its divisors is an integer number (10714596).

Almost surely, 2^28572254 is an apocalyptic number.

28572254 is a deficient number, since it is larger than the sum of its proper divisors (14286130).

28572254 is a wasteful number, since it uses less digits than its factorization.

28572254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14286129.

The product of its digits is 44800, while the sum is 35.

The square root of 28572254 is about 5345.3020494636. The cubic root of 28572254 is about 305.7136526987.

The spelling of 28572254 in words is "twenty-eight million, five hundred seventy-two thousand, two hundred fifty-four".