20733404 has 12 divisors (see below), whose sum is σ = 38417904. Its totient is φ = 9756864.

The previous prime is 20733359. The next prime is 20733467. The reversal of 20733404 is 40433702.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20733404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152384 + ... + 152519.

It is an arithmetic number, because the mean of its divisors is an integer number (3201492).

Almost surely, 2^20733404 is an apocalyptic number.

It is an amenable number.

20733404 is a deficient number, since it is larger than the sum of its proper divisors (17684500).

20733404 is a wasteful number, since it uses less digits than its factorization.

20733404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304924 (or 304922 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 20733404 is about 4553.3947775259. The cubic root of 20733404 is about 274.7199529266.

The spelling of 20733404 in words is "twenty million, seven hundred thirty-three thousand, four hundred four".