30220320400 has 30 divisors (see below), whose sum is σ = 72604320722. Its totient is φ = 12088128000.

The previous prime is 30220320371. The next prime is 30220320421. The reversal of 30220320400 is 402302203.

It can be written as a sum of positive squares in 3 ways, for example, as 2738638224 + 27481682176 = 52332^2 + 165776^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37775001 + ... + 37775800.

Almost surely, 2^30220320400 is an apocalyptic number.

It is an amenable number.

30220320400 is an abundant number, since it is smaller than the sum of its proper divisors (42384000322).

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

30220320400 is a wasteful number, since it uses less digits than its factorization.

30220320400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75550819 (or 75550808 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

Adding to 30220320400 its reverse (402302203), we get a palindrome (30622622603).

The spelling of 30220320400 in words is "thirty billion, two hundred twenty million, three hundred twenty thousand, four hundred".