20537273 has 8 divisors (see below), whose sum is σ = 21223488. Its totient is φ = 19860624.

The previous prime is 20537267. The next prime is 20537311. The reversal of 20537273 is 37273502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20537273 - 2¹⁴ = 20520889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20537213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2111 + ... + 6747.

It is an arithmetic number, because the mean of its divisors is an integer number (2652936).

Almost surely, 2^20537273 is an apocalyptic number.

It is an amenable number.

20537273 is a deficient number, since it is larger than the sum of its proper divisors (686215).

20537273 is a wasteful number, since it uses less digits than its factorization.

20537273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4783.

The product of its (nonzero) digits is 8820, while the sum is 29.

The square root of 20537273 is about 4531.8068140643. The cubic root of 20537273 is about 273.8509543347.

The spelling of 20537273 in words is "twenty million, five hundred thirty-seven thousand, two hundred seventy-three".