30221140 has 24 divisors (see below), whose sum is σ = 63891072. Its totient is φ = 12007200.

The previous prime is 30221137. The next prime is 30221143. The reversal of 30221140 is 4112203.

It is an interprime number because it is at equal distance from previous prime (30221137) and next prime (30221143).

It is a self number, because there is not a number n which added to its sum of digits gives 30221140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30221143) 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, 1984 + ... + 8023.

It is an arithmetic number, because the mean of its divisors is an integer number (2662128).

Almost surely, 2^30221140 is an apocalyptic number.

It is an amenable number.

30221140 is an abundant number, since it is smaller than the sum of its proper divisors (33669932).

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

30221140 is a wasteful number, since it uses less digits than its factorization.

30221140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10167 (or 10165 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 30221140 is about 5497.3757375679. The cubic root of 30221140 is about 311.4848638328.

Adding to 30221140 its reverse (4112203), we get a palindrome (34333343).

The spelling of 30221140 in words is "thirty million, two hundred twenty-one thousand, one hundred forty".