20311744 has 14 divisors (see below), whose sum is σ = 40306244. Its totient is φ = 10155840.

The previous prime is 20311723. The next prime is 20311763. The reversal of 20311744 is 44711302.

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 as a sum of consecutive naturals, namely, 158622 + ... + 158749.

Almost surely, 2^20311744 is an apocalyptic number.

It is an amenable number.

20311744 is a deficient number, since it is larger than the sum of its proper divisors (19994500).

20311744 is an equidigital number, since it uses as much as digits as its factorization.

20311744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317383 (or 317373 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 20311744 is about 4506.8552228799. The cubic root of 20311744 is about 272.8448357263.

The spelling of 20311744 in words is "twenty million, three hundred eleven thousand, seven hundred forty-four".