20396136 has 16 divisors (see below), whose sum is σ = 50990400. Its totient is φ = 6798704.

The previous prime is 20396119. The next prime is 20396153. The reversal of 20396136 is 63169302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20396119) and next prime (20396153).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424896 + ... + 424943.

It is an arithmetic number, because the mean of its divisors is an integer number (3186900).

Almost surely, 2^20396136 is an apocalyptic number.

It is an amenable number.

20396136 is an abundant number, since it is smaller than the sum of its proper divisors (30594264).

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

20396136 is a wasteful number, since it uses less digits than its factorization.

20396136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849848 (or 849844 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 20396136 is about 4516.2081440075. The cubic root of 20396136 is about 273.2221889318. Note that the first 3 decimals are identical.

The spelling of 20396136 in words is "twenty million, three hundred ninety-six thousand, one hundred thirty-six".