20196495 has 24 divisors (see below), whose sum is σ = 38190672. Its totient is φ = 9792000.

The previous prime is 20196443. The next prime is 20196509. The reversal of 20196495 is 59469102.

20196495 is a `hidden beast` number, since 2 + 0 + 1 + 9 + 649 + 5 = 666.

It is not a de Polignac number, because 20196495 - 2⁶ = 20196431 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19906 + ... + 20895.

It is an arithmetic number, because the mean of its divisors is an integer number (1591278).

Almost surely, 2^20196495 is an apocalyptic number.

20196495 is a deficient number, since it is larger than the sum of its proper divisors (17994177).

20196495 is a wasteful number, since it uses less digits than its factorization.

20196495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40823 (or 40820 counting only the distinct ones).

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

The square root of 20196495 is about 4494.0510678006. The cubic root of 20196495 is about 272.3278153611.

The spelling of 20196495 in words is "twenty million, one hundred ninety-six thousand, four hundred ninety-five".