30221376 has 112 divisors (see below), whose sum is σ = 86904576. Its totient is φ = 9232384.

The previous prime is 30221369. The next prime is 30221431. The reversal of 30221376 is 67312203.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153310 + ... + 153506.

Almost surely, 2^30221376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30221376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43452288).

30221376 is an abundant number, since it is smaller than the sum of its proper divisors (56683200).

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

30221376 is a wasteful number, since it uses less digits than its factorization.

30221376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 30221376 is about 5497.3972023131. The cubic root of 30221376 is about 311.4856746365.

Adding to 30221376 its reverse (67312203), we get a palindrome (97533579).

The spelling of 30221376 in words is "thirty million, two hundred twenty-one thousand, three hundred seventy-six".