20343995 has 16 divisors (see below), whose sum is σ = 28582848. Its totient is φ = 13608960.

The previous prime is 20343991. The next prime is 20344007. The reversal of 20343995 is 59934302.

It is not a de Polignac number, because 20343995 - 2² = 20343991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (20343991) 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, 5654 + ... + 8523.

It is an arithmetic number, because the mean of its divisors is an integer number (1786428).

Almost surely, 2^20343995 is an apocalyptic number.

20343995 is a deficient number, since it is larger than the sum of its proper divisors (8238853).

20343995 is a wasteful number, since it uses less digits than its factorization.

20343995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14230.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 20343995 is about 4510.4317975112. The cubic root of 20343995 is about 272.9891670978.

The spelling of 20343995 in words is "twenty million, three hundred forty-three thousand, nine hundred ninety-five".