20229964 has 12 divisors (see below), whose sum is σ = 35728000. Its totient is φ = 10021968.

The previous prime is 20229961. The next prime is 20229971. The reversal of 20229964 is 46992202.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20229961) 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 3 ways as a sum of consecutive naturals, for example, 22764 + ... + 23635.

Almost surely, 2^20229964 is an apocalyptic number.

It is an amenable number.

20229964 is a deficient number, since it is larger than the sum of its proper divisors (15498036).

20229964 is a wasteful number, since it uses less digits than its factorization.

20229964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46512 (or 46510 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 20229964 is about 4497.7732268313. The cubic root of 20229964 is about 272.4781633878.

The spelling of 20229964 in words is "twenty million, two hundred twenty-nine thousand, nine hundred sixty-four".