20392528 has 20 divisors (see below), whose sum is σ = 42550228. Its totient is φ = 9411840.

The previous prime is 20392523. The next prime is 20392577. The reversal of 20392528 is 82529302.

It can be written as a sum of positive squares in 2 ways, for example, as 9290304 + 11102224 = 3048^2 + 3332^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20392528.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20392523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48813 + ... + 49228.

Almost surely, 2^20392528 is an apocalyptic number.

It is an amenable number.

20392528 is an abundant number, since it is smaller than the sum of its proper divisors (22157700).

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

20392528 is a wasteful number, since it uses less digits than its factorization.

20392528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98062 (or 98056 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 20392528 is about 4515.8086761952. The cubic root of 20392528 is about 273.2060773214.

The spelling of 20392528 in words is "twenty million, three hundred ninety-two thousand, five hundred twenty-eight".