20267004 has 12 divisors (see below), whose sum is σ = 47289704. Its totient is φ = 6755664.

The previous prime is 20266999. The next prime is 20267029. The reversal of 20267004 is 40076202.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×20267004² = 821502902272032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 844447 + ... + 844470.

Almost surely, 2^20267004 is an apocalyptic number.

It is an amenable number.

20267004 is an abundant number, since it is smaller than the sum of its proper divisors (27022700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20267004 is a wasteful number, since it uses less digits than its factorization.

20267004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688924 (or 1688922 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 20267004 is about 4501.8889368797. Note that the first 3 decimals coincide. The cubic root of 20267004 is about 272.6443597251.

The spelling of 20267004 in words is "twenty million, two hundred sixty-seven thousand, four".