20604116 has 24 divisors (see below), whose sum is σ = 39884040. Its totient is φ = 9251712.

The previous prime is 20604107. The next prime is 20604131. The reversal of 20604116 is 61140602.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8976016 + 11628100 = 2996^2 + 3410^2 .

It is a super-2 number, since 2×20604116² = 849059192282912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3431 + ... + 7278.

It is an arithmetic number, because the mean of its divisors is an integer number (1661835).

Almost surely, 2^20604116 is an apocalyptic number.

20604116 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20604116 is a deficient number, since it is larger than the sum of its proper divisors (19279924).

20604116 is a wasteful number, since it uses less digits than its factorization.

20604116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10763 (or 10761 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 20604116 is about 4539.1756960928. The cubic root of 20604116 is about 274.1477349890.

Adding to 20604116 its reverse (61140602), we get a palindrome (81744718).

The spelling of 20604116 in words is "twenty million, six hundred four thousand, one hundred sixteen".