20604276 has 72 divisors (see below), whose sum is σ = 64943424. Its totient is φ = 5351040.

The previous prime is 20604247. The next prime is 20604277. The reversal of 20604276 is 67240602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20604277) 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 23 ways as a sum of consecutive naturals, for example, 945 + ... + 6488.

It is an arithmetic number, because the mean of its divisors is an integer number (901992).

Almost surely, 2^20604276 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 20604276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32471712).

20604276 is an abundant number, since it is smaller than the sum of its proper divisors (44339148).

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

20604276 is a wasteful number, since it uses less digits than its factorization.

20604276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7461 (or 7456 counting only the distinct ones).

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

The square root of 20604276 is about 4539.1933204040. The cubic root of 20604276 is about 274.1484446130.

Adding to 20604276 its reverse (67240602), we get a palindrome (87844878).

It can be divided in two parts, 2060 and 4276, that added together give a palindrome (6336).

The spelling of 20604276 in words is "twenty million, six hundred four thousand, two hundred seventy-six".