20512653 has 32 divisors (see below), whose sum is σ = 32378880. Its totient is φ = 11309760.

The previous prime is 20512579. The next prime is 20512663. The reversal of 20512653 is 35621502.

It is not a de Polignac number, because 20512653 - 2¹³ = 20504461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20512663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85708 + ... + 85946.

It is an arithmetic number, because the mean of its divisors is an integer number (1011840).

Almost surely, 2^20512653 is an apocalyptic number.

It is an amenable number.

20512653 is a deficient number, since it is larger than the sum of its proper divisors (11866227).

20512653 is a wasteful number, since it uses less digits than its factorization.

20512653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 20512653 is about 4529.0896436260. The cubic root of 20512653 is about 273.7414801043.

The spelling of 20512653 in words is "twenty million, five hundred twelve thousand, six hundred fifty-three".