20373253 has 8 divisors (see below), whose sum is σ = 20849400. Its totient is φ = 19900608.

The previous prime is 20373247. The next prime is 20373289. The reversal of 20373253 is 35237302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6084 + 20367169 = 78^2 + 4513^2 .

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 20373253 - 2²¹ = 18276101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20373203) 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, 13543 + ... + 14971.

It is an arithmetic number, because the mean of its divisors is an integer number (2606175).

Almost surely, 2^20373253 is an apocalyptic number.

It is an amenable number.

20373253 is a deficient number, since it is larger than the sum of its proper divisors (476147).

20373253 is a wasteful number, since it uses less digits than its factorization.

20373253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1751.

The product of its (nonzero) digits is 3780, while the sum is 25.

The square root of 20373253 is about 4513.6740024065. The cubic root of 20373253 is about 273.1199721368.

It can be divided in two parts, 203732 and 53, that multiplied together give a square (10797796 = 3286²).

The spelling of 20373253 in words is "twenty million, three hundred seventy-three thousand, two hundred fifty-three".