28464923 has 4 divisors (see below), whose sum is σ = 28509168. Its totient is φ = 28420680.

The previous prime is 28464893. The next prime is 28464973. The reversal of 28464923 is 32946482.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28464923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28464973) 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, 21143 + ... + 22448.

It is an arithmetic number, because the mean of its divisors is an integer number (7127292).

Almost surely, 2^28464923 is an apocalyptic number.

28464923 is a deficient number, since it is larger than the sum of its proper divisors (44245).

28464923 is an equidigital number, since it uses as much as digits as its factorization.

28464923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44244.

The product of its digits is 82944, while the sum is 38.

The square root of 28464923 is about 5335.2528524897. The cubic root of 28464923 is about 305.3303703187.

The spelling of 28464923 in words is "twenty-eight million, four hundred sixty-four thousand, nine hundred twenty-three".