28192623 has 4 divisors (see below), whose sum is σ = 37590168. Its totient is φ = 18795080.

The previous prime is 28192607. The next prime is 28192627. The reversal of 28192623 is 32629182.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28192623 - 2⁴ = 28192607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28192627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4698768 + ... + 4698773.

It is an arithmetic number, because the mean of its divisors is an integer number (9397542).

Almost surely, 2^28192623 is an apocalyptic number.

28192623 is a deficient number, since it is larger than the sum of its proper divisors (9397545).

28192623 is an equidigital number, since it uses as much as digits as its factorization.

28192623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9397544.

The product of its digits is 10368, while the sum is 33.

The square root of 28192623 is about 5309.6725887761. The cubic root of 28192623 is about 304.3536361035.

The spelling of 28192623 in words is "twenty-eight million, one hundred ninety-two thousand, six hundred twenty-three".