20348087 has 4 divisors (see below), whose sum is σ = 20465880. Its totient is φ = 20230296.

The previous prime is 20348063. The next prime is 20348117. The reversal of 20348087 is 78084302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20348087 - 2¹² = 20343991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20348017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58637 + ... + 58982.

It is an arithmetic number, because the mean of its divisors is an integer number (5116470).

Almost surely, 2^20348087 is an apocalyptic number.

20348087 is a deficient number, since it is larger than the sum of its proper divisors (117793).

20348087 is a wasteful number, since it uses less digits than its factorization.

20348087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117792.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 20348087 is about 4510.8853898099. The cubic root of 20348087 is about 273.0074689240.

The spelling of 20348087 in words is "twenty million, three hundred forty-eight thousand, eighty-seven".