23030442 has 24 divisors (see below), whose sum is σ = 50115780. Its totient is φ = 7643520.

The previous prime is 23030431. The next prime is 23030443. The reversal of 23030442 is 24403032.

It can be written as a sum of positive squares in 2 ways, for example, as 21818241 + 1212201 = 4671^2 + 1101^2 .

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 (23030443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1684 + ... + 6992.

Almost surely, 2^23030442 is an apocalyptic number.

23030442 is an abundant number, since it is smaller than the sum of its proper divisors (27085338).

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

23030442 is a wasteful number, since it uses less digits than its factorization.

23030442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5558 (or 5555 counting only the distinct ones).

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

The square root of 23030442 is about 4799.0042717214. The cubic root of 23030442 is about 284.5121107847.

Adding to 23030442 its reverse (24403032), we get a palindrome (47433474).

The spelling of 23030442 in words is "twenty-three million, thirty thousand, four hundred forty-two".