28953023 has 16 divisors (see below), whose sum is σ = 33778944. Its totient is φ = 24524160.

The previous prime is 28953013. The next prime is 28953037. The reversal of 28953023 is 32035982.

It is a cyclic number.

It is not a de Polignac number, because 28953023 - 2⁴ = 28953007 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 (28953013) 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 15 ways as a sum of consecutive naturals, for example, 19286 + ... + 20732.

It is an arithmetic number, because the mean of its divisors is an integer number (2111184).

Almost surely, 2^28953023 is an apocalyptic number.

28953023 is a deficient number, since it is larger than the sum of its proper divisors (4825921).

28953023 is a wasteful number, since it uses less digits than its factorization.

28953023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 28953023 is about 5380.8013343739. The cubic root of 28953023 is about 307.0656983962.

The spelling of 28953023 in words is "twenty-eight million, nine hundred fifty-three thousand, twenty-three".