20733349 has 16 divisors (see below), whose sum is σ = 25885440. Its totient is φ = 16168320.

The previous prime is 20733337. The next prime is 20733359. The reversal of 20733349 is 94333702.

It is not a de Polignac number, because 20733349 - 2⁷ = 20733221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20733349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20733359) 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, 4857 + ... + 8065.

It is an arithmetic number, because the mean of its divisors is an integer number (1617840).

Almost surely, 2^20733349 is an apocalyptic number.

It is an amenable number.

20733349 is a deficient number, since it is larger than the sum of its proper divisors (5152091).

20733349 is a wasteful number, since it uses less digits than its factorization.

20733349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3300.

The product of its (nonzero) digits is 13608, while the sum is 31.

The square root of 20733349 is about 4553.3887380719. The cubic root of 20733349 is about 274.7197100076.

The spelling of 20733349 in words is "twenty million, seven hundred thirty-three thousand, three hundred forty-nine".