20534312 has 16 divisors (see below), whose sum is σ = 38990400. Its totient is φ = 10136880.

The previous prime is 20534303. The next prime is 20534329. The reversal of 20534312 is 21343502.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15614 + ... + 16877.

It is an arithmetic number, because the mean of its divisors is an integer number (2436900).

Almost surely, 2^20534312 is an apocalyptic number.

It is an amenable number.

20534312 is a deficient number, since it is larger than the sum of its proper divisors (18456088).

20534312 is a wasteful number, since it uses less digits than its factorization.

20534312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32576 (or 32572 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20534312 is about 4531.4801113985. The cubic root of 20534312 is about 273.8377927099.

Adding to 20534312 its reverse (21343502), we get a palindrome (41877814).

The spelling of 20534312 in words is "twenty million, five hundred thirty-four thousand, three hundred twelve".