20554528 has 24 divisors (see below), whose sum is σ = 41074992. Its totient is φ = 10122816.

The previous prime is 20554517. The next prime is 20554529. The reversal of 20554528 is 82545502.

It is a self number, because there is not a number n which added to its sum of digits gives 20554528.

It is not an unprimeable number, because it can be changed into a prime (20554529) 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, 2650 + ... + 6937.

It is an arithmetic number, because the mean of its divisors is an integer number (1711458).

Almost surely, 2^20554528 is an apocalyptic number.

It is an amenable number.

20554528 is a deficient number, since it is larger than the sum of its proper divisors (20520464).

20554528 is an equidigital number, since it uses as much as digits as its factorization.

20554528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9664 (or 9656 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 20554528 is about 4533.7101804152. The cubic root of 20554528 is about 273.9276275371.

The spelling of 20554528 in words is "twenty million, five hundred fifty-four thousand, five hundred twenty-eight".