20554332 has 12 divisors (see below), whose sum is σ = 47960136. Its totient is φ = 6851440.

The previous prime is 20554321. The next prime is 20554337. The reversal of 20554332 is 23345502.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20554337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 856419 + ... + 856442.

It is an arithmetic number, because the mean of its divisors is an integer number (3996678).

Almost surely, 2^20554332 is an apocalyptic number.

It is an amenable number.

20554332 is an abundant number, since it is smaller than the sum of its proper divisors (27405804).

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

20554332 is a wasteful number, since it uses less digits than its factorization.

20554332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712868 (or 1712866 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 20554332 is about 4533.6885645134. The cubic root of 20554332 is about 273.9267568452.

Adding to 20554332 its reverse (23345502), we get a palindrome (43899834).

The spelling of 20554332 in words is "twenty million, five hundred fifty-four thousand, three hundred thirty-two".