20954828 has 12 divisors (see below), whose sum is σ = 36703632. Its totient is φ = 10468080.

The previous prime is 20954827. The next prime is 20954861. The reversal of 20954828 is 82845902.

It is a junction number, because it is equal to n+sod(n) for n = 20954791 and 20954800.

It is not an unprimeable number, because it can be changed into a prime (20954827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6113 + ... + 8903.

It is an arithmetic number, because the mean of its divisors is an integer number (3058636).

Almost surely, 2^20954828 is an apocalyptic number.

It is an amenable number.

20954828 is a deficient number, since it is larger than the sum of its proper divisors (15748804).

20954828 is a wasteful number, since it uses less digits than its factorization.

20954828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4672 (or 4670 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 20954828 is about 4577.6443723819. The cubic root of 20954828 is about 275.6944563861.

The spelling of 20954828 in words is "twenty million, nine hundred fifty-four thousand, eight hundred twenty-eight".