30133894 has 16 divisors (see below), whose sum is σ = 54697248. Its totient is φ = 12154752.

The previous prime is 30133861. The next prime is 30133903. The reversal of 30133894 is 49833103.

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, 63069 + ... + 63544.

It is an arithmetic number, because the mean of its divisors is an integer number (3418578).

Almost surely, 2^30133894 is an apocalyptic number.

30133894 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

30133894 is a deficient number, since it is larger than the sum of its proper divisors (24563354).

30133894 is a wasteful number, since it uses less digits than its factorization.

30133894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126639.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 30133894 is about 5489.4347614304. The cubic root of 30133894 is about 311.1848310090.

Adding to 30133894 its reverse (49833103), we get a palindrome (79966997).

The spelling of 30133894 in words is "thirty million, one hundred thirty-three thousand, eight hundred ninety-four".