30803220 has 192 divisors, whose sum is σ = 113702400. Its totient is φ = 6773760.

The previous prime is 30803147. The next prime is 30803221. The reversal of 30803220 is 2230803.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 30803193 and 30803202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30803221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 109480 + ... + 109760.

It is an arithmetic number, because the mean of its divisors is an integer number (592200).

Almost surely, 2^30803220 is an apocalyptic number.

30803220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30803220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56851200).

30803220 is an abundant number, since it is smaller than the sum of its proper divisors (82899180).

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

30803220 is a wasteful number, since it uses less digits than its factorization.

30803220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 30803220 is about 5550.0648644858. The cubic root of 30803220 is about 313.4719647098.

The spelling of 30803220 in words is "thirty million, eight hundred three thousand, two hundred twenty".