28726297 has 8 divisors (see below), whose sum is σ = 29072736. Its totient is φ = 28382112.

The previous prime is 28726283. The next prime is 28726307. The reversal of 28726297 is 79262782.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28726297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28726267) 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, 41718 + ... + 42400.

It is an arithmetic number, because the mean of its divisors is an integer number (3634092).

Almost surely, 2^28726297 is an apocalyptic number.

It is an amenable number.

28726297 is a deficient number, since it is larger than the sum of its proper divisors (346439).

28726297 is a wasteful number, since it uses less digits than its factorization.

28726297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127.

The product of its digits is 169344, while the sum is 43.

The square root of 28726297 is about 5359.6918754719. The cubic root of 28726297 is about 306.2620713276.

The spelling of 28726297 in words is "twenty-eight million, seven hundred twenty-six thousand, two hundred ninety-seven".