28266694 has 4 divisors (see below), whose sum is σ = 42400044. Its totient is φ = 14133346.

The previous prime is 28266691. The next prime is 28266703. The reversal of 28266694 is 49666282.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28266694.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28266691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7066672 + ... + 7066675.

It is an arithmetic number, because the mean of its divisors is an integer number (10600011).

Almost surely, 2^28266694 is an apocalyptic number.

28266694 is a deficient number, since it is larger than the sum of its proper divisors (14133350).

28266694 is a wasteful number, since it uses less digits than its factorization.

28266694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14133349.

The product of its digits is 248832, while the sum is 43.

The square root of 28266694 is about 5316.6431138454. The cubic root of 28266694 is about 304.6199476574.

The spelling of 28266694 in words is "twenty-eight million, two hundred sixty-six thousand, six hundred ninety-four".