28290830 has 8 divisors (see below), whose sum is σ = 50923512. Its totient is φ = 11316328.

The previous prime is 28290827. The next prime is 28290833. The reversal of 28290830 is 3809282.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28290827) and next prime (28290833).

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 (28290833) 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, 1414532 + ... + 1414551.

It is an arithmetic number, because the mean of its divisors is an integer number (6365439).

Almost surely, 2^28290830 is an apocalyptic number.

28290830 is a deficient number, since it is larger than the sum of its proper divisors (22632682).

28290830 is a wasteful number, since it uses less digits than its factorization.

28290830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829090.

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

The square root of 28290830 is about 5318.9124828295. The cubic root of 28290830 is about 304.7066246422.

The spelling of 28290830 in words is "twenty-eight million, two hundred ninety thousand, eight hundred thirty".