20004726 has 32 divisors (see below), whose sum is σ = 46414080. Its totient is φ = 5629536.

The previous prime is 20004713. The next prime is 20004727. The reversal of 20004726 is 62740002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 741 + ... + 6368.

It is an arithmetic number, because the mean of its divisors is an integer number (1450440).

Almost surely, 2^20004726 is an apocalyptic number.

20004726 is an abundant number, since it is smaller than the sum of its proper divisors (26409354).

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

20004726 is a wasteful number, since it uses less digits than its factorization.

20004726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7188.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 20004726 is about 4472.6643066521. The cubic root of 20004726 is about 271.4631405384.

Adding to 20004726 its reverse (62740002), we get a palindrome (82744728).

The spelling of 20004726 in words is "twenty million, four thousand, seven hundred twenty-six".