20755312 has 20 divisors (see below), whose sum is σ = 40700520. Its totient is φ = 10251968.

The previous prime is 20755309. The next prime is 20755321. The reversal of 20755312 is 21355702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6487 + ... + 9142.

It is an arithmetic number, because the mean of its divisors is an integer number (2035026).

Almost surely, 2^20755312 is an apocalyptic number.

It is an amenable number.

20755312 is a deficient number, since it is larger than the sum of its proper divisors (19945208).

20755312 is a wasteful number, since it uses less digits than its factorization.

20755312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15720 (or 15714 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 20755312 is about 4555.7998200097. The cubic root of 20755312 is about 274.8166800266.

It can be divided in two parts, 2075 and 5312, that multiplied together give a square (11022400 = 3320²).

The spelling of 20755312 in words is "twenty million, seven hundred fifty-five thousand, three hundred twelve".