30221190 has 48 divisors (see below), whose sum is σ = 81291600. Its totient is φ = 7780416.

The previous prime is 30221173. The next prime is 30221207. The reversal of 30221190 is 9112203.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30221173) and next prime (30221207).

It is a super-2 number, since 2×30221190² = 1826640650032200, which contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3180 + ... + 8399.

It is an arithmetic number, because the mean of its divisors is an integer number (1693575).

Almost surely, 2^30221190 is an apocalyptic number.

30221190 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30221190 is an abundant number, since it is smaller than the sum of its proper divisors (51070410).

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

30221190 is a wasteful number, since it uses less digits than its factorization.

30221190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11621 (or 11618 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 30221190 is about 5497.3802851904. The cubic root of 30221190 is about 311.4850356135.

Adding to 30221190 its reverse (9112203), we get a palindrome (39333393).

The spelling of 30221190 in words is "thirty million, two hundred twenty-one thousand, one hundred ninety".