20539152 has 60 divisors (see below), whose sum is σ = 60514480. Its totient is φ = 6485184.

The previous prime is 20539121. The next prime is 20539157. The reversal of 20539152 is 25193502.

It is not an unprimeable number, because it can be changed into a prime (20539157) 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 11 ways as a sum of consecutive naturals, for example, 1018 + ... + 6489.

Almost surely, 2^20539152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20539152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30257240).

20539152 is an abundant number, since it is smaller than the sum of its proper divisors (39975328).

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

20539152 is a wasteful number, since it uses less digits than its factorization.

20539152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7540 (or 7531 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 20539152 is about 4532.0141217785. The cubic root of 20539152 is about 273.8593058208.

The spelling of 20539152 in words is "twenty million, five hundred thirty-nine thousand, one hundred fifty-two".