28769830 has 8 divisors (see below), whose sum is σ = 51785712. Its totient is φ = 11507928.

The previous prime is 28769821. The next prime is 28769837. The reversal of 28769830 is 3896782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28769837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1438482 + ... + 1438501.

It is an arithmetic number, because the mean of its divisors is an integer number (6473214).

Almost surely, 2^28769830 is an apocalyptic number.

28769830 is a deficient number, since it is larger than the sum of its proper divisors (23015882).

28769830 is a wasteful number, since it uses less digits than its factorization.

28769830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2876990.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 28769830 is about 5363.7514856675. The cubic root of 28769830 is about 306.4167005806.

The spelling of 28769830 in words is "twenty-eight million, seven hundred sixty-nine thousand, eight hundred thirty".