20667532 has 24 divisors (see below), whose sum is σ = 37310112. Its totient is φ = 10012800.

The previous prime is 20667527. The next prime is 20667533. The reversal of 20667532 is 23576602.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20667494 and 20667503.

It is not an unprimeable number, because it can be changed into a prime (20667533) by changing a digit.

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, 16728 + ... + 17920.

It is an arithmetic number, because the mean of its divisors is an integer number (1554588).

Almost surely, 2^20667532 is an apocalyptic number.

It is an amenable number.

20667532 is a deficient number, since it is larger than the sum of its proper divisors (16642580).

20667532 is a wasteful number, since it uses less digits than its factorization.

20667532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329 (or 1327 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 20667532 is about 4546.1557386434. The cubic root of 20667532 is about 274.4287071146.

The spelling of 20667532 in words is "twenty million, six hundred sixty-seven thousand, five hundred thirty-two".