20232145 has 16 divisors (see below), whose sum is σ = 25058880. Its totient is φ = 15672384.

The previous prime is 20232143. The next prime is 20232151. The reversal of 20232145 is 54123202.

It is a cyclic number.

It is not a de Polignac number, because 20232145 - 2¹ = 20232143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20232143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29547 + ... + 30223.

It is an arithmetic number, because the mean of its divisors is an integer number (1566180).

Almost surely, 2^20232145 is an apocalyptic number.

It is an amenable number.

20232145 is a deficient number, since it is larger than the sum of its proper divisors (4826735).

20232145 is a wasteful number, since it uses less digits than its factorization.

20232145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20232145 is about 4498.0156736054. The cubic root of 20232145 is about 272.4879550269.

Adding to 20232145 its reverse (54123202), we get a palindrome (74355347).

The spelling of 20232145 in words is "twenty million, two hundred thirty-two thousand, one hundred forty-five".