20404552 has 32 divisors (see below), whose sum is σ = 44795520. Its totient is φ = 8530560.

The previous prime is 20404547. The next prime is 20404567. The reversal of 20404552 is 25540402.

It is a super-3 number, since 3×20404552³ (a number of 23 digits) contains 333 as substring.

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, 2148 + ... + 6739.

It is an arithmetic number, because the mean of its divisors is an integer number (1399860).

Almost surely, 2^20404552 is an apocalyptic number.

It is an amenable number.

20404552 is an abundant number, since it is smaller than the sum of its proper divisors (24390968).

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

20404552 is a wasteful number, since it uses less digits than its factorization.

20404552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8941 (or 8937 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 20404552 is about 4517.1398030169. The cubic root of 20404552 is about 273.2597633976.

Adding to 20404552 its reverse (25540402), we get a palindrome (45944954).

The spelling of 20404552 in words is "twenty million, four hundred four thousand, five hundred fifty-two".