20743552 has 16 divisors (see below), whose sum is σ = 41325300. Its totient is φ = 10371712.

The previous prime is 20743537. The next prime is 20743559. The reversal of 20743552 is 25534702.

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 20743552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20743559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80902 + ... + 81157.

Almost surely, 2^20743552 is an apocalyptic number.

It is an amenable number.

20743552 is a deficient number, since it is larger than the sum of its proper divisors (20581748).

20743552 is an equidigital number, since it uses as much as digits as its factorization.

20743552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162073 (or 162061 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 20743552 is about 4554.5089746316. The cubic root of 20743552 is about 274.7647663327.

The spelling of 20743552 in words is "twenty million, seven hundred forty-three thousand, five hundred fifty-two".