20734264 has 8 divisors (see below), whose sum is σ = 38876760. Its totient is φ = 10367128.

The previous prime is 20734253. The next prime is 20734267. The reversal of 20734264 is 46243702.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20734267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1295884 + ... + 1295899.

It is an arithmetic number, because the mean of its divisors is an integer number (4859595).

Almost surely, 2^20734264 is an apocalyptic number.

It is an amenable number.

20734264 is a deficient number, since it is larger than the sum of its proper divisors (18142496).

20734264 is a wasteful number, since it uses less digits than its factorization.

20734264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2591789 (or 2591785 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 20734264 is about 4553.4892115827. The cubic root of 20734264 is about 274.7237512399.

Adding to 20734264 its reverse (46243702), we get a palindrome (66977966).

The spelling of 20734264 in words is "twenty million, seven hundred thirty-four thousand, two hundred sixty-four".