20734336 has 64 divisors (see below), whose sum is σ = 48005280. Its totient is φ = 8736768.

The previous prime is 20734321. The next prime is 20734361. The reversal of 20734336 is 63343702.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65250 + ... + 65566.

Almost surely, 2^20734336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20734336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24002640).

20734336 is an abundant number, since it is smaller than the sum of its proper divisors (27270944).

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

20734336 is an equidigital number, since it uses as much as digits as its factorization.

20734336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 28.

The square root of 20734336 is about 4553.4971176009. The cubic root of 20734336 is about 274.7240692334.

It can be divided in two parts, 207 and 34336, that added together give a palindrome (34543).

The spelling of 20734336 in words is "twenty million, seven hundred thirty-four thousand, three hundred thirty-six".