20455532 has 12 divisors (see below), whose sum is σ = 35948640. Its totient is φ = 10184496.

The previous prime is 20455531. The next prime is 20455537. The reversal of 20455532 is 23555402.

It is not an unprimeable number, because it can be changed into a prime (20455531) 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, 9743 + ... + 11654.

It is an arithmetic number, because the mean of its divisors is an integer number (2995720).

Almost surely, 2^20455532 is an apocalyptic number.

It is an amenable number.

20455532 is a deficient number, since it is larger than the sum of its proper divisors (15493108).

20455532 is a wasteful number, since it uses less digits than its factorization.

20455532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21640 (or 21638 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 20455532 is about 4522.7792340551. The cubic root of 20455532 is about 273.4871505181.

The spelling of 20455532 in words is "twenty million, four hundred fifty-five thousand, five hundred thirty-two".