20894036 has 24 divisors (see below), whose sum is σ = 38019240. Its totient is φ = 10035200.

The previous prime is 20894023. The next prime is 20894059. The reversal of 20894036 is 63049802.

It can be written as a sum of positive squares in 4 ways, for example, as 9265936 + 11628100 = 3044^2 + 3410^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20893993 and 20894011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32276 + ... + 32916.

It is an arithmetic number, because the mean of its divisors is an integer number (1584135).

Almost surely, 2^20894036 is an apocalyptic number.

It is an amenable number.

20894036 is a deficient number, since it is larger than the sum of its proper divisors (17125204).

20894036 is a wasteful number, since it uses less digits than its factorization.

20894036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955 (or 953 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 20894036 is about 4570.9994530737. Note that the first 3 decimals coincide. The cubic root of 20894036 is about 275.4275926504.

The spelling of 20894036 in words is "twenty million, eight hundred ninety-four thousand, thirty-six".