20734266 has 32 divisors (see below), whose sum is σ = 48175488. Its totient is φ = 5826240.

The previous prime is 20734253. The next prime is 20734267. The reversal of 20734266 is 66243702.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1485 + ... + 6608.

It is an arithmetic number, because the mean of its divisors is an integer number (1505484).

Almost surely, 2^20734266 is an apocalyptic number.

20734266 is an abundant number, since it is smaller than the sum of its proper divisors (27441222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20734266 is a wasteful number, since it uses less digits than its factorization.

20734266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8166.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 20734266 is about 4553.4894311945. The cubic root of 20734266 is about 274.7237600730.

Adding to 20734266 its reverse (66243702), we get a palindrome (86977968).

The spelling of 20734266 in words is "twenty million, seven hundred thirty-four thousand, two hundred sixty-six".