30822145 has 4 divisors (see below), whose sum is σ = 36986580. Its totient is φ = 24657712.

The previous prime is 30822137. The next prime is 30822149. The reversal of 30822145 is 54122803.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22886656 + 7935489 = 4784^2 + 2817^2 .

It is a cyclic number.

It is not a de Polignac number, because 30822145 - 2³ = 30822137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30822149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3082210 + ... + 3082219.

It is an arithmetic number, because the mean of its divisors is an integer number (9246645).

Almost surely, 2^30822145 is an apocalyptic number.

It is an amenable number.

30822145 is a deficient number, since it is larger than the sum of its proper divisors (6164435).

30822145 is an equidigital number, since it uses as much as digits as its factorization.

30822145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6164434.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 30822145 is about 5551.7695377240. The cubic root of 30822145 is about 313.5361489349.

Adding to 30822145 its reverse (54122803), we get a palindrome (84944948).

The spelling of 30822145 in words is "thirty million, eight hundred twenty-two thousand, one hundred forty-five".