30683220 has 24 divisors (see below), whose sum is σ = 85913184. Its totient is φ = 8182176.

The previous prime is 30683207. The next prime is 30683221. The reversal of 30683220 is 2238603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30683221) 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, 255634 + ... + 255753.

It is an arithmetic number, because the mean of its divisors is an integer number (3579716).

Almost surely, 2^30683220 is an apocalyptic number.

30683220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30683220 is an abundant number, since it is smaller than the sum of its proper divisors (55229964).

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

30683220 is a wasteful number, since it uses less digits than its factorization.

30683220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511399 (or 511397 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 30683220 is about 5539.2436306774. The cubic root of 30683220 is about 313.0643710727.

It can be divided in two parts, 30683 and 220, that added together give a palindrome (30903).

The spelling of 30683220 in words is "thirty million, six hundred eighty-three thousand, two hundred twenty".