28773023 has 8 divisors (see below), whose sum is σ = 30437088. Its totient is φ = 27143424.

The previous prime is 28773007. The next prime is 28773037. The reversal of 28773023 is 32037782.

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 28773023 - 2⁴ = 28773007 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 (28773323) 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, 6890 + ... + 10247.

It is an arithmetic number, because the mean of its divisors is an integer number (3804636).

Almost surely, 2^28773023 is an apocalyptic number.

28773023 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

28773023 is a deficient number, since it is larger than the sum of its proper divisors (1664065).

28773023 is a wasteful number, since it uses less digits than its factorization.

28773023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17233.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 28773023 is about 5364.0491235633. The cubic root of 28773023 is about 306.4280359776.

The spelling of 28773023 in words is "twenty-eight million, seven hundred seventy-three thousand, twenty-three".