28332623 has 8 divisors (see below), whose sum is σ = 31974480. Its totient is φ = 24868480.

The previous prime is 28332617. The next prime is 28332641. The reversal of 28332623 is 32623382.

It is a happy number.

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 28332623 - 2¹⁰ = 28331599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28332653) 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, 44090 + ... + 44727.

It is an arithmetic number, because the mean of its divisors is an integer number (3996810).

Almost surely, 2^28332623 is an apocalyptic number.

28332623 is a deficient number, since it is larger than the sum of its proper divisors (3641857).

28332623 is a wasteful number, since it uses less digits than its factorization.

28332623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88857.

The product of its digits is 10368, while the sum is 29.

The square root of 28332623 is about 5322.8397496073. The cubic root of 28332623 is about 304.8565947717.

The spelling of 28332623 in words is "twenty-eight million, three hundred thirty-two thousand, six hundred twenty-three".