30011320 has 32 divisors (see below), whose sum is σ = 70463520. Its totient is φ = 11482240.

The previous prime is 30011299. The next prime is 30011321. The reversal of 30011320 is 2311003.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 30011297 and 30011306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30011321) 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, 15391 + ... + 17230.

It is an arithmetic number, because the mean of its divisors is an integer number (2201985).

Almost surely, 2^30011320 is an apocalyptic number.

It is an amenable number.

30011320 is an abundant number, since it is smaller than the sum of its proper divisors (40452200).

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

30011320 is a wasteful number, since it uses less digits than its factorization.

30011320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32655 (or 32651 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 30011320 is about 5478.2588474806. The cubic root of 30011320 is about 310.7623277607.

Adding to 30011320 its reverse (2311003), we get a palindrome (32322323).

The spelling of 30011320 in words is "thirty million, eleven thousand, three hundred twenty".