30420323220 has 96 divisors (see below), whose sum is σ = 97393459968. Its totient is φ = 6949757952.

The previous prime is 30420323201. The next prime is 30420323221. The reversal of 30420323220 is 2232302403.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30420323221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 880594 + ... + 914486.

It is an arithmetic number, because the mean of its divisors is an integer number (1014515208).

Almost surely, 2^30420323220 is an apocalyptic number.

30420323220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30420323220 is an abundant number, since it is smaller than the sum of its proper divisors (66973136748).

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

30420323220 is a wasteful number, since it uses less digits than its factorization.

30420323220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36049 (or 36047 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

Adding to 30420323220 its reverse (2232302403), we get a palindrome (32652625623).

The spelling of 30420323220 in words is "thirty billion, four hundred twenty million, three hundred twenty-three thousand, two hundred twenty".