28367726 has 4 divisors (see below), whose sum is σ = 42551592. Its totient is φ = 14183862.

The previous prime is 28367723. The next prime is 28367737. The reversal of 28367726 is 62776382.

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

It is a super-2 number, since 2×28367726² = 1609455756822152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28367723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7091930 + ... + 7091933.

It is an arithmetic number, because the mean of its divisors is an integer number (10637898).

Almost surely, 2^28367726 is an apocalyptic number.

28367726 is a deficient number, since it is larger than the sum of its proper divisors (14183866).

28367726 is a wasteful number, since it uses less digits than its factorization.

28367726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14183865.

The product of its digits is 169344, while the sum is 41.

The square root of 28367726 is about 5326.1361229319. The cubic root of 28367726 is about 304.9824445687.

The spelling of 28367726 in words is "twenty-eight million, three hundred sixty-seven thousand, seven hundred twenty-six".