28750967 has 4 divisors (see below), whose sum is σ = 32858256. Its totient is φ = 24643680.

The previous prime is 28750913. The next prime is 28750979. The reversal of 28750967 is 76905782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76905782 = 2 ⋅38452891.

It is a cyclic number.

It is not a de Polignac number, because 28750967 - 2⁶ = 28750903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28750987) 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, 2053634 + ... + 2053647.

It is an arithmetic number, because the mean of its divisors is an integer number (8214564).

Almost surely, 2^28750967 is an apocalyptic number.

28750967 is a deficient number, since it is larger than the sum of its proper divisors (4107289).

28750967 is an equidigital number, since it uses as much as digits as its factorization.

28750967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4107288.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 28750967 is about 5361.9928198385. The cubic root of 28750967 is about 306.3497183531.

The spelling of 28750967 in words is "twenty-eight million, seven hundred fifty thousand, nine hundred sixty-seven".