20197038 has 16 divisors (see below), whose sum is σ = 42520320. Its totient is φ = 6377976.

The previous prime is 20197007. The next prime is 20197069. The reversal of 20197038 is 83079102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20197007) and next prime (20197069).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20196996 and 20197014.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88470 + ... + 88697.

It is an arithmetic number, because the mean of its divisors is an integer number (2657520).

Almost surely, 2^20197038 is an apocalyptic number.

20197038 is an abundant number, since it is smaller than the sum of its proper divisors (22323282).

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

20197038 is a wasteful number, since it uses less digits than its factorization.

20197038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177191.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 20197038 is about 4494.1114805932. Note that the first 3 decimals coincide. The cubic root of 20197038 is about 272.3302559278.

The spelling of 20197038 in words is "twenty million, one hundred ninety-seven thousand, thirty-eight".