20654850 has 24 divisors (see below), whose sum is σ = 51224400. Its totient is φ = 5507920.

The previous prime is 20654819. The next prime is 20654863. The reversal of 20654850 is 5845602.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 68700 + ... + 68999.

It is an arithmetic number, because the mean of its divisors is an integer number (2134350).

Almost surely, 2^20654850 is an apocalyptic number.

20654850 is an abundant number, since it is smaller than the sum of its proper divisors (30569550).

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

20654850 is a wasteful number, since it uses less digits than its factorization.

20654850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137714 (or 137709 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 20654850 is about 4544.7607197739. The cubic root of 20654850 is about 274.3725640304.

The spelling of 20654850 in words is "twenty million, six hundred fifty-four thousand, eight hundred fifty".