20654834 has 4 divisors (see below), whose sum is σ = 30982254. Its totient is φ = 10327416.

The previous prime is 20654819. The next prime is 20654863. The reversal of 20654834 is 43845602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19758025 + 896809 = 4445^2 + 947^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20654834.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5163707 + ... + 5163710.

Almost surely, 2^20654834 is an apocalyptic number.

20654834 is a deficient number, since it is larger than the sum of its proper divisors (10327420).

20654834 is a wasteful number, since it uses less digits than its factorization.

20654834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10327419.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 20654834 is about 4544.7589595049. The cubic root of 20654834 is about 274.3724931840.

The spelling of 20654834 in words is "twenty million, six hundred fifty-four thousand, eight hundred thirty-four".