30221469 has 12 divisors (see below), whose sum is σ = 44718492. Its totient is φ = 19656000.

The previous prime is 30221467. The next prime is 30221473. The reversal of 30221469 is 96412203.

It can be written as a sum of positive squares in 2 ways, for example, as 15705369 + 14516100 = 3963^2 + 3810^2 .

It is not a de Polignac number, because 30221469 - 2¹ = 30221467 is a prime.

It is a super-2 number, since 2×30221469² = 1826674377035922, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30221467) 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 11 ways as a sum of consecutive naturals, for example, 40582 + ... + 41319.

It is an arithmetic number, because the mean of its divisors is an integer number (3726541).

Almost surely, 2^30221469 is an apocalyptic number.

It is an amenable number.

30221469 is a deficient number, since it is larger than the sum of its proper divisors (14497023).

30221469 is a wasteful number, since it uses less digits than its factorization.

30221469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81948 (or 81945 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 30221469 is about 5497.4056608549. The cubic root of 30221469 is about 311.4859941469.

The spelling of 30221469 in words is "thirty million, two hundred twenty-one thousand, four hundred sixty-nine".