20375145 has 40 divisors (see below), whose sum is σ = 41747904. Its totient is φ = 9313056.

The previous prime is 20375101. The next prime is 20375167. The reversal of 20375145 is 54157302.

It is a happy number.

It is not a de Polignac number, because 20375145 - 2⁸ = 20374889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 759 + ... + 6428.

Almost surely, 2^20375145 is an apocalyptic number.

It is an amenable number.

20375145 is an abundant number, since it is smaller than the sum of its proper divisors (21372759).

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

20375145 is an equidigital number, since it uses as much as digits as its factorization.

20375145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7211 (or 7202 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 20375145 is about 4513.8835829029. The cubic root of 20375145 is about 273.1284264730.

The spelling of 20375145 in words is "twenty million, three hundred seventy-five thousand, one hundred forty-five".