20234145 has 16 divisors (see below), whose sum is σ = 34079040. Its totient is φ = 10223424.

The previous prime is 20234143. The next prime is 20234147. The reversal of 20234145 is 54143202.

It is an interprime number because it is at equal distance from previous prime (20234143) and next prime (20234147).

It is not a de Polignac number, because 20234145 - 2¹ = 20234143 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20234143) 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, 35214 + ... + 35783.

It is an arithmetic number, because the mean of its divisors is an integer number (2129940).

Almost surely, 2^20234145 is an apocalyptic number.

It is an amenable number.

20234145 is a deficient number, since it is larger than the sum of its proper divisors (13844895).

20234145 is a wasteful number, since it uses less digits than its factorization.

20234145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71024.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 20234145 is about 4498.2379883683. The cubic root of 20234145 is about 272.4969334447.

Adding to 20234145 its reverse (54143202), we get a palindrome (74377347).

The spelling of 20234145 in words is "twenty million, two hundred thirty-four thousand, one hundred forty-five".