30001022320 has 20 divisors (see below), whose sum is σ = 69752377080. Its totient is φ = 12000408896.

The previous prime is 30001022309. The next prime is 30001022321. The reversal of 30001022320 is 2322010003.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×30001022320² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30001022320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30001022321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187506310 + ... + 187506469.

It is an arithmetic number, because the mean of its divisors is an integer number (3487618854).

Almost surely, 2^30001022320 is an apocalyptic number.

It is an amenable number.

30001022320 is an abundant number, since it is smaller than the sum of its proper divisors (39751354760).

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

30001022320 is a wasteful number, since it uses less digits than its factorization.

30001022320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375012792 (or 375012786 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 30001022320 its reverse (2322010003), we get a palindrome (32323032323).

The spelling of 30001022320 in words is "thirty billion, one million, twenty-two thousand, three hundred twenty".