28257934 has 8 divisors (see below), whose sum is σ = 42420960. Its totient is φ = 14117616.

The previous prime is 28257907. The next prime is 28257937. The reversal of 28257934 is 43975282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28257937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2119 + ... + 7810.

It is an arithmetic number, because the mean of its divisors is an integer number (5302620).

Almost surely, 2^28257934 is an apocalyptic number.

28257934 is a deficient number, since it is larger than the sum of its proper divisors (14163026).

28257934 is a wasteful number, since it uses less digits than its factorization.

28257934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11354.

The product of its digits is 120960, while the sum is 40.

The square root of 28257934 is about 5315.8192219074. The cubic root of 28257934 is about 304.5884766213.

The spelling of 28257934 in words is "twenty-eight million, two hundred fifty-seven thousand, nine hundred thirty-four".