20237340 has 48 divisors (see below), whose sum is σ = 56891520. Its totient is φ = 5375040.

The previous prime is 20237333. The next prime is 20237341. The reversal of 20237340 is 4373202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20237341) 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 15 ways as a sum of consecutive naturals, for example, 19351 + ... + 20369.

It is an arithmetic number, because the mean of its divisors is an integer number (1185240).

Almost surely, 2^20237340 is an apocalyptic number.

20237340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20237340 is an abundant number, since it is smaller than the sum of its proper divisors (36654180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20237340 is a wasteful number, since it uses less digits than its factorization.

20237340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362 (or 1360 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 20237340 is about 4498.5931134078. The cubic root of 20237340 is about 272.5112752398.

The spelling of 20237340 in words is "twenty million, two hundred thirty-seven thousand, three hundred forty".