20532828 has 12 divisors (see below), whose sum is σ = 47909960. Its totient is φ = 6844272.

The previous prime is 20532823. The next prime is 20532833. The reversal of 20532828 is 82823502.

It is an interprime number because it is at equal distance from previous prime (20532823) and next prime (20532833).

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

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20532795 and 20532804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20532823) by changing a digit.

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, 855523 + ... + 855546.

Almost surely, 2^20532828 is an apocalyptic number.

It is an amenable number.

20532828 is an abundant number, since it is smaller than the sum of its proper divisors (27377132).

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

20532828 is a wasteful number, since it uses less digits than its factorization.

20532828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711076 (or 1711074 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 20532828 is about 4531.3163650312. The cubic root of 20532828 is about 273.8311958640.

It can be divided in two parts, 205 and 32828, that added together give a palindrome (33033).

The spelling of 20532828 in words is "twenty million, five hundred thirty-two thousand, eight hundred twenty-eight".