30221480 has 32 divisors (see below), whose sum is σ = 70345800. Its totient is φ = 11671296.

The previous prime is 30221479. The next prime is 30221483. The reversal of 30221480 is 8412203.

It can be written as a sum of positive squares in 4 ways, for example, as 28153636 + 2067844 = 5306^2 + 1438^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (30221483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11867 + ... + 14186.

Almost surely, 2^30221480 is an apocalyptic number.

It is an amenable number.

30221480 is an abundant number, since it is smaller than the sum of its proper divisors (40124320).

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

30221480 is a wasteful number, since it uses less digits than its factorization.

30221480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26093 (or 26089 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 30221480 is about 5497.4066613268. The cubic root of 30221480 is about 311.4860319384.

Adding to 30221480 its reverse (8412203), we get a palindrome (38633683).

The spelling of 30221480 in words is "thirty million, two hundred twenty-one thousand, four hundred eighty".