28267051 has 4 divisors (see below), whose sum is σ = 28277704. Its totient is φ = 28256400.

The previous prime is 28267027. The next prime is 28267067. The reversal of 28267051 is 15076282.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28267051 - 2¹³ = 28258859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28267021) 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, 2191 + ... + 7831.

It is an arithmetic number, because the mean of its divisors is an integer number (7069426).

Almost surely, 2^28267051 is an apocalyptic number.

28267051 is a deficient number, since it is larger than the sum of its proper divisors (10653).

28267051 is an equidigital number, since it uses as much as digits as its factorization.

28267051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10652.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 28267051 is about 5316.6766875559. The cubic root of 28267051 is about 304.6212300720.

The spelling of 28267051 in words is "twenty-eight million, two hundred sixty-seven thousand, fifty-one".