20552432 has 20 divisors (see below), whose sum is σ = 41552400. Its totient is φ = 9829248.

The previous prime is 20552423. The next prime is 20552447. The reversal of 20552432 is 23425502.

It is a super-2 number, since 2×20552432² = 844804922229248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 20552398 and 20552407.

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 3 ways as a sum of consecutive naturals, for example, 27557 + ... + 28292.

It is an arithmetic number, because the mean of its divisors is an integer number (2077620).

Almost surely, 2^20552432 is an apocalyptic number.

It is an amenable number.

20552432 is an abundant number, since it is smaller than the sum of its proper divisors (20999968).

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

20552432 is a wasteful number, since it uses less digits than its factorization.

20552432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55880 (or 55874 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 20552432 is about 4533.4790172670. The cubic root of 20552432 is about 273.9183161772.

Adding to 20552432 its reverse (23425502), we get a palindrome (43977934).

The spelling of 20552432 in words is "twenty million, five hundred fifty-two thousand, four hundred thirty-two".