20538152 has 8 divisors (see below), whose sum is σ = 38509050. Its totient is φ = 10269072.

The previous prime is 20538143. The next prime is 20538157. The reversal of 20538152 is 25183502.

It can be written as a sum of positive squares in only one way, i.e., 19589476 + 948676 = 4426^2 + 974^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (20538157) 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 as a sum of consecutive naturals, namely, 1283627 + ... + 1283642.

Almost surely, 2^20538152 is an apocalyptic number.

It is an amenable number.

20538152 is a deficient number, since it is larger than the sum of its proper divisors (17970898).

20538152 is a wasteful number, since it uses less digits than its factorization.

20538152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567275 (or 2567271 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 20538152 is about 4531.9037942128. The cubic root of 20538152 is about 273.8548612402.

The spelling of 20538152 in words is "twenty million, five hundred thirty-eight thousand, one hundred fifty-two".