30220140 has 48 divisors (see below), whose sum is σ = 85075200. Its totient is φ = 8015040.

The previous prime is 30220139. The next prime is 30220147. The reversal of 30220140 is 4102203.

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

It is not an unprimeable number, because it can be changed into a prime (30220147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10675 + ... + 13205.

It is an arithmetic number, because the mean of its divisors is an integer number (1772400).

Almost surely, 2^30220140 is an apocalyptic number.

30220140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30220140 is an abundant number, since it is smaller than the sum of its proper divisors (54855060).

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

30220140 is a wasteful number, since it uses less digits than its factorization.

30220140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742 (or 2740 counting only the distinct ones).

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

The square root of 30220140 is about 5497.2847843276. The cubic root of 30220140 is about 311.4814281770.

Adding to 30220140 its reverse (4102203), we get a palindrome (34322343).

The spelling of 30220140 in words is "thirty million, two hundred twenty thousand, one hundred forty".