30774138 has 32 divisors (see below), whose sum is σ = 64540800. Its totient is φ = 9763776.

The previous prime is 30774119. The next prime is 30774151. The reversal of 30774138 is 83147703.

It is a junction number, because it is equal to n+sod(n) for n = 30774099 and 30774108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36708 + ... + 37536.

It is an arithmetic number, because the mean of its divisors is an integer number (2016900).

Almost surely, 2^30774138 is an apocalyptic number.

30774138 is an abundant number, since it is smaller than the sum of its proper divisors (33766662).

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

30774138 is a wasteful number, since it uses less digits than its factorization.

30774138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 30774138 is about 5547.4442764214. Note that the first 3 decimals coincide. The cubic root of 30774138 is about 313.3732817131.

The spelling of 30774138 in words is "thirty million, seven hundred seventy-four thousand, one hundred thirty-eight".