30521364 has 24 divisors (see below), whose sum is σ = 71322048. Its totient is φ = 10158720.

The previous prime is 30521363. The next prime is 30521383. The reversal of 30521364 is 46312503.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30521363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9129 + ... + 12015.

It is an arithmetic number, because the mean of its divisors is an integer number (2971752).

Almost surely, 2^30521364 is an apocalyptic number.

It is an amenable number.

30521364 is an abundant number, since it is smaller than the sum of its proper divisors (40800684).

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

30521364 is a wasteful number, since it uses less digits than its factorization.

30521364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3775 (or 3773 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 30521364 is about 5524.6143756827. The cubic root of 30521364 is about 312.5129219190.

Adding to 30521364 its reverse (46312503), we get a palindrome (76833867).

The spelling of 30521364 in words is "thirty million, five hundred twenty-one thousand, three hundred sixty-four".