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30774 = 2323223

30774 has 16 divisors (see below), whose sum is σ = 64512. Its totient is φ = 9768.

The previous prime is 30773. The next prime is 30781. The reversal of 30774 is 47703.

It can be divided in two parts, 3077 and 4, that added together give a triangular number (3081 = T78).

30774 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 30774.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 30774.

It is not an unprimeable number, because it can be changed into a prime (30773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27 + ... + 249.

It is an arithmetic number, because the mean of its divisors is an integer number (4032).

230774 is an apocalyptic number.

30774 is an abundant number, since it is smaller than the sum of its proper divisors (33738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32256).

30774 is a wasteful number, since it uses less digits than its factorization.

30774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251.

The product of its (nonzero) digits is 588, while the sum is 21.

The square root of 30774 is about 175.4251977340. The cubic root of 30774 is about 31.3372813294.

The spelling of 30774 in words is "thirty thousand, seven hundred seventy-four".

Divisors: 1 2 3 6 23 46 69 138 223 446 669 1338 5129 10258 15387 30774