20366672 has 10 divisors (see below), whose sum is σ = 39460458. Its totient is φ = 10183328.

The previous prime is 20366657. The next prime is 20366677. The reversal of 20366672 is 27666302.

It can be written as a sum of positive squares in only one way, i.e., 20286016 + 80656 = 4504^2 + 284^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20366677) 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, 636443 + ... + 636474.

Almost surely, 2^20366672 is an apocalyptic number.

It is an amenable number.

20366672 is a deficient number, since it is larger than the sum of its proper divisors (19093786).

20366672 is a wasteful number, since it uses less digits than its factorization.

20366672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272925 (or 1272919 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 20366672 is about 4512.9449365132. The cubic root of 20366672 is about 273.0905610898.

The spelling of 20366672 in words is "twenty million, three hundred sixty-six thousand, six hundred seventy-two".