20462145 has 64 divisors (see below), whose sum is σ = 38568960. Its totient is φ = 9158400.

The previous prime is 20462137. The next prime is 20462149. The reversal of 20462145 is 54126402.

It is not a de Polignac number, because 20462145 - 2³ = 20462137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20462149) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 191182 + ... + 191288.

It is an arithmetic number, because the mean of its divisors is an integer number (602640).

Almost surely, 2^20462145 is an apocalyptic number.

It is an amenable number.

20462145 is a deficient number, since it is larger than the sum of its proper divisors (18106815).

20462145 is a wasteful number, since it uses less digits than its factorization.

20462145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 20462145 is about 4523.5102520056. The cubic root of 20462145 is about 273.5166189225.

Adding to 20462145 its reverse (54126402), we get a palindrome (74588547).

The spelling of 20462145 in words is "twenty million, four hundred sixty-two thousand, one hundred forty-five".