28029830 has 8 divisors (see below), whose sum is σ = 50453712. Its totient is φ = 11211928.

The previous prime is 28029817. The next prime is 28029839. The reversal of 28029830 is 3892082.

It is a happy number.

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 (28029839) 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, 1401482 + ... + 1401501.

It is an arithmetic number, because the mean of its divisors is an integer number (6306714).

Almost surely, 2^28029830 is an apocalyptic number.

28029830 is a deficient number, since it is larger than the sum of its proper divisors (22423882).

28029830 is a wasteful number, since it uses less digits than its factorization.

28029830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2802990.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 28029830 is about 5294.3205418637. The cubic root of 28029830 is about 303.7666939743.

The spelling of 28029830 in words is "twenty-eight million, twenty-nine thousand, eight hundred thirty".