20654812 has 12 divisors (see below), whose sum is σ = 36186696. Its totient is φ = 10315760.

The previous prime is 20654801. The next prime is 20654819. The reversal of 20654812 is 21845602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20654819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1998 + ... + 6730.

It is an arithmetic number, because the mean of its divisors is an integer number (3015558).

Almost surely, 2^20654812 is an apocalyptic number.

It is an amenable number.

20654812 is a deficient number, since it is larger than the sum of its proper divisors (15531884).

20654812 is a wasteful number, since it uses less digits than its factorization.

20654812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5828 (or 5826 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 20654812 is about 4544.7565391339. The cubic root of 20654812 is about 274.3723957702.

The spelling of 20654812 in words is "twenty million, six hundred fifty-four thousand, eight hundred twelve".