30028790 has 16 divisors (see below), whose sum is σ = 58965840. Its totient is φ = 10919520.

The previous prime is 30028781. The next prime is 30028813. The reversal of 30028790 is 9782003.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136385 + ... + 136604.

It is an arithmetic number, because the mean of its divisors is an integer number (3685365).

Almost surely, 2^30028790 is an apocalyptic number.

30028790 is a deficient number, since it is larger than the sum of its proper divisors (28937050).

30028790 is a wasteful number, since it uses less digits than its factorization.

30028790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273007.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 30028790 is about 5479.8531002208. The cubic root of 30028790 is about 310.8226157317.

The spelling of 30028790 in words is "thirty million, twenty-eight thousand, seven hundred ninety".