20733426 has 48 divisors (see below), whose sum is σ = 52228800. Its totient is φ = 5821344.

The previous prime is 20733359. The next prime is 20733467. The reversal of 20733426 is 62433702.

20733426 is a `hidden beast` number, since 207 + 33 + 426 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20733426.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6040 + ... + 8828.

It is an arithmetic number, because the mean of its divisors is an integer number (1088100).

Almost surely, 2^20733426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20733426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26114400).

20733426 is an abundant number, since it is smaller than the sum of its proper divisors (31495374).

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

20733426 is a wasteful number, since it uses less digits than its factorization.

20733426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2863 (or 2860 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 20733426 is about 4553.3971933052. The cubic root of 20733426 is about 274.7200500940.

It can be divided in two parts, 207 and 33426, that added together give a palindrome (33633).

The spelling of 20733426 in words is "twenty million, seven hundred thirty-three thousand, four hundred twenty-six".