20148345 has 96 divisors (see below), whose sum is σ = 43610112. Its totient is φ = 8724672.

The previous prime is 20148329. The next prime is 20148347. The reversal of 20148345 is 54384102.

It is not a de Polignac number, because 20148345 - 2⁴ = 20148329 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (20148347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 195564 + ... + 195666.

It is an arithmetic number, because the mean of its divisors is an integer number (454272).

Almost surely, 2^20148345 is an apocalyptic number.

It is an amenable number.

20148345 is an abundant number, since it is smaller than the sum of its proper divisors (23461767).

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

20148345 is a wasteful number, since it uses less digits than its factorization.

20148345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 20148345 is about 4488.6907890832. The cubic root of 20148345 is about 272.1112263176. Note that the first 3 decimals are identical.

The spelling of 20148345 in words is "twenty million, one hundred forty-eight thousand, three hundred forty-five".