28769342 has 32 divisors (see below), whose sum is σ = 50678784. Its totient is φ = 11995200.

The previous prime is 28769329. The next prime is 28769357. The reversal of 28769342 is 24396782.

It is a happy number.

It is a super-2 number, since 2×28769342² = 1655350078225928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28769342.

It is a congruent number.

It is an unprimeable number.

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, 102242 + ... + 102522.

It is an arithmetic number, because the mean of its divisors is an integer number (1583712).

Almost surely, 2^28769342 is an apocalyptic number.

28769342 is a deficient number, since it is larger than the sum of its proper divisors (21909442).

28769342 is a wasteful number, since it uses less digits than its factorization.

28769342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464.

The product of its digits is 145152, while the sum is 41.

The square root of 28769342 is about 5363.7059949255. The cubic root of 28769342 is about 306.4149680690.

The spelling of 28769342 in words is "twenty-eight million, seven hundred sixty-nine thousand, three hundred forty-two".