20273569 has 4 divisors (see below), whose sum is σ = 20286000. Its totient is φ = 20261140.

The previous prime is 20273543. The next prime is 20273573. The reversal of 20273569 is 96537202.

It is a happy number.

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 20273569 - 2⁷ = 20273441 is a prime.

It is a super-2 number, since 2×20273569² = 822035199995522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20273579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3319 + ... + 7180.

It is an arithmetic number, because the mean of its divisors is an integer number (5071500).

Almost surely, 2^20273569 is an apocalyptic number.

It is an amenable number.

20273569 is a deficient number, since it is larger than the sum of its proper divisors (12431).

20273569 is a wasteful number, since it uses less digits than its factorization.

20273569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12430.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 20273569 is about 4502.6180162212. The cubic root of 20273569 is about 272.6737953699.

The spelling of 20273569 in words is "twenty million, two hundred seventy-three thousand, five hundred sixty-nine".