28427623 has 8 divisors (see below), whose sum is σ = 32537120. Its totient is φ = 24330240.

The previous prime is 28427593. The next prime is 28427639. The reversal of 28427623 is 32672482.

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-28427623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28427683) 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, 2743 + ... + 8023.

It is an arithmetic number, because the mean of its divisors is an integer number (4067140).

Almost surely, 2^28427623 is an apocalyptic number.

28427623 is a deficient number, since it is larger than the sum of its proper divisors (4109497).

28427623 is an equidigital number, since it uses as much as digits as its factorization.

28427623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6057.

The product of its digits is 32256, while the sum is 34.

The square root of 28427623 is about 5331.7560896950. The cubic root of 28427623 is about 305.1969452722.

The spelling of 28427623 in words is "twenty-eight million, four hundred twenty-seven thousand, six hundred twenty-three".