20667204 has 48 divisors (see below), whose sum is σ = 55319040. Its totient is φ = 6665760.

The previous prime is 20667197. The next prime is 20667211. The reversal of 20667204 is 40276602.

It is an interprime number because it is at equal distance from previous prime (20667197) and next prime (20667211).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 262 + ... + 6434.

It is an arithmetic number, because the mean of its divisors is an integer number (1152480).

Almost surely, 2^20667204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20667204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27659520).

20667204 is an abundant number, since it is smaller than the sum of its proper divisors (34651836).

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

20667204 is a wasteful number, since it uses less digits than its factorization.

20667204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6217 (or 6209 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20667204 is about 4546.1196640652. The cubic root of 20667204 is about 274.4272553513.

The spelling of 20667204 in words is "twenty million, six hundred sixty-seven thousand, two hundred four".