20733312 has 32 divisors (see below), whose sum is σ = 55073880. Its totient is φ = 6910976.

The previous prime is 20733259. The next prime is 20733337. The reversal of 20733312 is 21333702.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26613 + ... + 27380.

Almost surely, 2^20733312 is an apocalyptic number.

It is an amenable number.

20733312 is an abundant number, since it is smaller than the sum of its proper divisors (34340568).

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

20733312 is an equidigital number, since it uses as much as digits as its factorization.

20733312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54010 (or 53998 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 21.

The square root of 20733312 is about 4553.3846751620. The cubic root of 20733312 is about 274.7195465891.

The spelling of 20733312 in words is "twenty million, seven hundred thirty-three thousand, three hundred twelve".