20373738 has 96 divisors (see below), whose sum is σ = 54136320. Its totient is φ = 4989600.

The previous prime is 20373737. The next prime is 20373739. The reversal of 20373738 is 83737302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20373737) and next prime (20373739).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 20373699 and 20373708.

It is not an unprimeable number, because it can be changed into a prime (20373737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 96453 + ... + 96663.

It is an arithmetic number, because the mean of its divisors is an integer number (563920).

Almost surely, 2^20373738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20373738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27068160).

20373738 is an abundant number, since it is smaller than the sum of its proper divisors (33762582).

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

20373738 is a wasteful number, since it uses less digits than its factorization.

20373738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 20373738 is about 4513.7277277213. The cubic root of 20373738 is about 273.1221393923.

It can be divided in two parts, 2037 and 3738, that added together give a palindrome (5775).

The spelling of 20373738 in words is "twenty million, three hundred seventy-three thousand, seven hundred thirty-eight".