28064423 has 8 divisors (see below), whose sum is σ = 28871568. Its totient is φ = 27264384.

The previous prime is 28064417. The next prime is 28064437. The reversal of 28064423 is 32446082.

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 28064423 - 2⁶ = 28064359 is a prime.

It is a super-2 number, since 2×28064423² = 1575223676645858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28064473) 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, 6815 + ... + 10127.

It is an arithmetic number, because the mean of its divisors is an integer number (3608946).

Almost surely, 2^28064423 is an apocalyptic number.

28064423 is a deficient number, since it is larger than the sum of its proper divisors (807145).

28064423 is a wasteful number, since it uses less digits than its factorization.

28064423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3553.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 28064423 is about 5297.5865259569. The cubic root of 28064423 is about 303.8916071033.

The spelling of 28064423 in words is "twenty-eight million, sixty-four thousand, four hundred twenty-three".