20273297 has 4 divisors (see below), whose sum is σ = 22116336. Its totient is φ = 18430260.

The previous prime is 20273273. The next prime is 20273303. The reversal of 20273297 is 79237202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20273297 - 2⁸ = 20273041 is a prime.

It is a super-2 number, since 2×20273297² = 822013142500418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20273207) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 921503 + ... + 921524.

It is an arithmetic number, because the mean of its divisors is an integer number (5529084).

Almost surely, 2^20273297 is an apocalyptic number.

It is an amenable number.

20273297 is a deficient number, since it is larger than the sum of its proper divisors (1843039).

20273297 is a wasteful number, since it uses less digits than its factorization.

20273297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843038.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 20273297 is about 4502.5878114702. The cubic root of 20273297 is about 272.6725759233.

The spelling of 20273297 in words is "twenty million, two hundred seventy-three thousand, two hundred ninety-seven".