30022140 has 24 divisors (see below), whose sum is σ = 84062160. Its totient is φ = 8005888.

The previous prime is 30022123. The next prime is 30022141. The reversal of 30022140 is 4122003.

It is a Harshad number since it is a multiple of its sum of digits (12).

30022140 is a modest number, since divided by 22140 gives 300 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30022141) 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, 250125 + ... + 250244.

It is an arithmetic number, because the mean of its divisors is an integer number (3502590).

Almost surely, 2^30022140 is an apocalyptic number.

30022140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30022140 is an abundant number, since it is smaller than the sum of its proper divisors (54040020).

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

30022140 is a wasteful number, since it uses less digits than its factorization.

30022140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500381 (or 500379 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 30022140 is about 5479.2462985341. The cubic root of 30022140 is about 310.7996697190.

Adding to 30022140 its reverse (4122003), we get a palindrome (34144143).

The spelling of 30022140 in words is "thirty million, twenty-two thousand, one hundred forty".