28744023 has 16 divisors (see below), whose sum is σ = 47782656. Its totient is φ = 14931840.

The previous prime is 28744007. The next prime is 28744057. The reversal of 28744023 is 32044782.

It is not a de Polignac number, because 28744023 - 2⁴ = 28744007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28744003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61986 + ... + 62447.

It is an arithmetic number, because the mean of its divisors is an integer number (2986416).

Almost surely, 2^28744023 is an apocalyptic number.

28744023 is a deficient number, since it is larger than the sum of its proper divisors (19038633).

28744023 is a wasteful number, since it uses less digits than its factorization.

28744023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124454.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 28744023 is about 5361.3452602868. The cubic root of 28744023 is about 306.3250529366.

The spelling of 28744023 in words is "twenty-eight million, seven hundred forty-four thousand, twenty-three".