30221430 has 16 divisors (see below), whose sum is σ = 72531504. Its totient is φ = 8059040.

The previous prime is 30221369. The next prime is 30221431. The reversal of 30221430 is 3412203.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30221431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503661 + ... + 503720.

It is an arithmetic number, because the mean of its divisors is an integer number (4533219).

Almost surely, 2^30221430 is an apocalyptic number.

30221430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30221430 is an abundant number, since it is smaller than the sum of its proper divisors (42310074).

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

30221430 is a wasteful number, since it uses less digits than its factorization.

30221430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007391.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 30221430 is about 5497.4021137261. The cubic root of 30221430 is about 311.4858601587.

Adding to 30221430 its reverse (3412203), we get a palindrome (33633633).

The spelling of 30221430 in words is "thirty million, two hundred twenty-one thousand, four hundred thirty".