20146995 has 32 divisors (see below), whose sum is σ = 39075840. Its totient is φ = 9767520.

The previous prime is 20146991. The next prime is 20147021. The reversal of 20146995 is 59964102.

It is not a de Polignac number, because 20146995 - 2² = 20146991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20146991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5299 + ... + 8268.

It is an arithmetic number, because the mean of its divisors is an integer number (1221120).

Almost surely, 2^20146995 is an apocalyptic number.

20146995 is a deficient number, since it is larger than the sum of its proper divisors (18928845).

20146995 is a wasteful number, since it uses less digits than its factorization.

20146995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13592 (or 13586 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 20146995 is about 4488.5404086407. The cubic root of 20146995 is about 272.1051487571.

It can be divided in two parts, 2014 and 6995, that added together give a palindrome (9009).

The spelling of 20146995 in words is "twenty million, one hundred forty-six thousand, nine hundred ninety-five".