28266737 has 8 divisors (see below), whose sum is σ = 29811360. Its totient is φ = 26727840.

The previous prime is 28266731. The next prime is 28266743. The reversal of 28266737 is 73766282.

It is an interprime number because it is at equal distance from previous prime (28266731) and next prime (28266743).

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

It is a cyclic number.

It is not a de Polignac number, because 28266737 - 2²⁴ = 11489521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28266694 and 28266703.

It is not an unprimeable number, because it can be changed into a prime (28266731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12053 + ... + 14205.

It is an arithmetic number, because the mean of its divisors is an integer number (3726420).

Almost surely, 2^28266737 is an apocalyptic number.

It is an amenable number.

28266737 is a deficient number, since it is larger than the sum of its proper divisors (1544623).

28266737 is a wasteful number, since it uses less digits than its factorization.

28266737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863.

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

The square root of 28266737 is about 5316.6471577490. The cubic root of 28266737 is about 304.6201021225.

The spelling of 28266737 in words is "twenty-eight million, two hundred sixty-six thousand, seven hundred thirty-seven".