20466988 has 12 divisors (see below), whose sum is σ = 35851032. Its totient is φ = 10223840.

The previous prime is 20466983. The next prime is 20466989. The reversal of 20466988 is 88966402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20466983) 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 in 3 ways as a sum of consecutive naturals, for example, 4656 + ... + 7912.

It is an arithmetic number, because the mean of its divisors is an integer number (2987586).

Almost surely, 2^20466988 is an apocalyptic number.

It is an amenable number.

20466988 is a deficient number, since it is larger than the sum of its proper divisors (15384044).

20466988 is a wasteful number, since it uses less digits than its factorization.

20466988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4832 (or 4830 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 20466988 is about 4524.0455346957. The cubic root of 20466988 is about 273.5381959451.

The spelling of 20466988 in words is "twenty million, four hundred sixty-six thousand, nine hundred eighty-eight".