20746442384 has 20 divisors (see below), whose sum is σ = 40226701740. Its totient is φ = 10365358080.

The previous prime is 20746442369. The next prime is 20746442389. The reversal of 20746442384 is 48324464702.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16666810000 + 4079632384 = 129100^2 + 63872^2 .

It is not an unprimeable number, because it can be changed into a prime (20746442389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469649 + ... + 511920.

It is an arithmetic number, because the mean of its divisors is an integer number (2011335087).

Almost surely, 2^20746442384 is an apocalyptic number.

It is an amenable number.

20746442384 is a deficient number, since it is larger than the sum of its proper divisors (19480259356).

20746442384 is a wasteful number, since it uses less digits than its factorization.

20746442384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982898 (or 982892 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 44.

The spelling of 20746442384 in words is "twenty billion, seven hundred forty-six million, four hundred forty-two thousand, three hundred eighty-four".