20138296 has 32 divisors (see below), whose sum is σ = 39729600. Its totient is φ = 9555840.

The previous prime is 20138273. The next prime is 20138303. The reversal of 20138296 is 69283102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13441 + ... + 14863.

It is an arithmetic number, because the mean of its divisors is an integer number (1241550).

Almost surely, 2^20138296 is an apocalyptic number.

It is an amenable number.

20138296 is a deficient number, since it is larger than the sum of its proper divisors (19591304).

20138296 is a wasteful number, since it uses less digits than its factorization.

20138296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519 (or 1515 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 20138296 is about 4487.5712807709. The cubic root of 20138296 is about 272.0659802450.

The spelling of 20138296 in words is "twenty million, one hundred thirty-eight thousand, two hundred ninety-six".