30505134 has 16 divisors (see below), whose sum is σ = 66556800. Its totient is φ = 9243960.

The previous prime is 30505133. The next prime is 30505151. The reversal of 30505134 is 43150503.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30505134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30505133) 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, 231034 + ... + 231165.

It is an arithmetic number, because the mean of its divisors is an integer number (4159800).

Almost surely, 2^30505134 is an apocalyptic number.

30505134 is an abundant number, since it is smaller than the sum of its proper divisors (36051666).

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

30505134 is a wasteful number, since it uses less digits than its factorization.

30505134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462215.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 30505134 is about 5523.1452995553. The cubic root of 30505134 is about 312.4575182786.

Adding to 30505134 its reverse (43150503), we get a palindrome (73655637).

The spelling of 30505134 in words is "thirty million, five hundred five thousand, one hundred thirty-four".