20197275 has 96 divisors (see below), whose sum is σ = 42283008. Its totient is φ = 8294400.

The previous prime is 20197271. The next prime is 20197277. The reversal of 20197275 is 57279102.

It is not a de Polignac number, because 20197275 - 2² = 20197271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20197271) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 276639 + ... + 276711.

It is an arithmetic number, because the mean of its divisors is an integer number (440448).

Almost surely, 2^20197275 is an apocalyptic number.

20197275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20197275 is an abundant number, since it is smaller than the sum of its proper divisors (22085733).

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

20197275 is a wasteful number, since it uses less digits than its factorization.

20197275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 20197275 is about 4494.1378483531. The cubic root of 20197275 is about 272.3313211338.

The spelling of 20197275 in words is "twenty million, one hundred ninety-seven thousand, two hundred seventy-five".