30322440 has 48 divisors (see below), whose sum is σ = 98549100. Its totient is φ = 8085888.

The previous prime is 30322427. The next prime is 30322447. The reversal of 30322440 is 4422303.

It can be written as a sum of positive squares in 2 ways, for example, as 27060804 + 3261636 = 5202^2 + 1806^2 .

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

It is not an unprimeable number, because it can be changed into a prime (30322447) 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, 41755 + ... + 42474.

Almost surely, 2^30322440 is an apocalyptic number.

30322440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30322440 is an abundant number, since it is smaller than the sum of its proper divisors (68226660).

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

30322440 is a wasteful number, since it uses less digits than its factorization.

30322440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84246 (or 84239 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 30322440 is about 5506.5815166944. The cubic root of 30322440 is about 311.8325037846.

Adding to 30322440 its reverse (4422303), we get a palindrome (34744743).

The spelling of 30322440 in words is "thirty million, three hundred twenty-two thousand, four hundred forty".