28934623 has 4 divisors (see below), whose sum is σ = 28962760. Its totient is φ = 28906488.

The previous prime is 28934617. The next prime is 28934627. The reversal of 28934623 is 32643982.

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 28934623 - 2¹³ = 28926431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28934627) 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, 12465 + ... + 14602.

It is an arithmetic number, because the mean of its divisors is an integer number (7240690).

Almost surely, 2^28934623 is an apocalyptic number.

28934623 is a deficient number, since it is larger than the sum of its proper divisors (28137).

28934623 is a wasteful number, since it uses less digits than its factorization.

28934623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28136.

The product of its digits is 62208, while the sum is 37.

The square root of 28934623 is about 5379.0912801327. The cubic root of 28934623 is about 307.0006366102. Note that the first 3 decimals are identical.

The spelling of 28934623 in words is "twenty-eight million, nine hundred thirty-four thousand, six hundred twenty-three".