20589224 has 8 divisors (see below), whose sum is σ = 38604810. Its totient is φ = 10294608.

The previous prime is 20589223. The next prime is 20589251. The reversal of 20589224 is 42298502.

It can be written as a sum of positive squares in only one way, i.e., 19624900 + 964324 = 4430^2 + 982^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20589224² = 847832289844352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20589223) by changing a digit.

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 as a sum of consecutive naturals, namely, 1286819 + ... + 1286834.

Almost surely, 2^20589224 is an apocalyptic number.

It is an amenable number.

20589224 is a deficient number, since it is larger than the sum of its proper divisors (18015586).

20589224 is a wasteful number, since it uses less digits than its factorization.

20589224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573659 (or 2573655 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 20589224 is about 4537.5350136390. The cubic root of 20589224 is about 274.0816706477.

The spelling of 20589224 in words is "twenty million, five hundred eighty-nine thousand, two hundred twenty-four".