20743304 has 8 divisors (see below), whose sum is σ = 38893710. Its totient is φ = 10371648.

The previous prime is 20743271. The next prime is 20743337. The reversal of 20743304 is 40334702.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20743271) and next prime (20743337).

It can be written as a sum of positive squares in only one way, i.e., 20702500 + 40804 = 4550^2 + 202^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 20743304.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1296449 + ... + 1296464.

Almost surely, 2^20743304 is an apocalyptic number.

It is an amenable number.

20743304 is a deficient number, since it is larger than the sum of its proper divisors (18150406).

20743304 is a wasteful number, since it uses less digits than its factorization.

20743304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2592919 (or 2592915 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 20743304 is about 4554.4817487833. The cubic root of 20743304 is about 274.7636713429.

The spelling of 20743304 in words is "twenty million, seven hundred forty-three thousand, three hundred four".