28743429 has 24 divisors (see below), whose sum is σ = 45373216. Its totient is φ = 16077600.

The previous prime is 28743401. The next prime is 28743467. The reversal of 28743429 is 92434782.

It is not a de Polignac number, because 28743429 - 2⁵ = 28743397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28743499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1674 + ... + 7764.

Almost surely, 2^28743429 is an apocalyptic number.

It is an amenable number.

28743429 is a deficient number, since it is larger than the sum of its proper divisors (16629787).

28743429 is a wasteful number, since it uses less digits than its factorization.

28743429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6129 (or 6118 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 28743429 is about 5361.2898634564. The cubic root of 28743429 is about 306.3229428361.

The spelling of 28743429 in words is "twenty-eight million, seven hundred forty-three thousand, four hundred twenty-nine".