20373237 has 12 divisors (see below), whose sum is σ = 29843424. Its totient is φ = 13390440.

The previous prime is 20373229. The next prime is 20373247. The reversal of 20373237 is 73237302.

It is a happy number.

It is not a de Polignac number, because 20373237 - 2³ = 20373229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20373237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20373247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15303 + ... + 16580.

It is an arithmetic number, because the mean of its divisors is an integer number (2486952).

Almost surely, 2^20373237 is an apocalyptic number.

It is an amenable number.

20373237 is a deficient number, since it is larger than the sum of its proper divisors (9470187).

20373237 is a wasteful number, since it uses less digits than its factorization.

20373237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31960 (or 31957 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 27.

The square root of 20373237 is about 4513.6722300140. The cubic root of 20373237 is about 273.1199006391.

The spelling of 20373237 in words is "twenty million, three hundred seventy-three thousand, two hundred thirty-seven".