30790 has 8 divisors (see below), whose sum is σ = 55440. Its totient is φ = 12312.

The previous prime is 30781. The next prime is 30803. The reversal of 30790 is 9703.

It is a happy number.

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

It is a plaindrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1530 + ... + 1549.

It is an arithmetic number, because the mean of its divisors is an integer number (6930).

2³⁰⁷⁹⁰ is an apocalyptic number.

30790 is a deficient number, since it is larger than the sum of its proper divisors (24650).

30790 is a wasteful number, since it uses less digits than its factorization.

30790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3086.

The product of its (nonzero) digits is 189, while the sum is 19.

The square root of 30790 is about 175.4707952908. The cubic root of 30790 is about 31.3427113421.

It can be divided in two parts, 30 and 790, that added together give a triangular number (820 = T₄₀).

The spelling of 30790 in words is "thirty thousand, seven hundred ninety".