30342400220 has 24 divisors (see below), whose sum is σ = 69511681008. Its totient is φ = 11033600000.

The previous prime is 30342400219. The next prime is 30342400223. The reversal of 30342400220 is 2200424303.

It is a super-2 number, since 2×30342400220² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 30342400192 and 30342400201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30342400223) 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, 68959781 + ... + 68960220.

It is an arithmetic number, because the mean of its divisors is an integer number (2896320042).

Almost surely, 2^30342400220 is an apocalyptic number.

It is an amenable number.

30342400220 is an abundant number, since it is smaller than the sum of its proper divisors (39169280788).

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

30342400220 is a wasteful number, since it uses less digits than its factorization.

30342400220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137920021 (or 137920019 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 30342400220 its reverse (2200424303), we get a palindrome (32542824523).

The spelling of 30342400220 in words is "thirty billion, three hundred forty-two million, four hundred thousand, two hundred twenty".