20532315 has 16 divisors (see below), whose sum is σ = 32979456. Its totient is φ = 10908000.

The previous prime is 20532313. The next prime is 20532341. The reversal of 20532315 is 51323502.

It is not a de Polignac number, because 20532315 - 2¹ = 20532313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20532291 and 20532300.

It is not an unprimeable number, because it can be changed into a prime (20532313) 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 15 ways as a sum of consecutive naturals, for example, 1540 + ... + 6590.

It is an arithmetic number, because the mean of its divisors is an integer number (2061216).

Almost surely, 2^20532315 is an apocalyptic number.

20532315 is a deficient number, since it is larger than the sum of its proper divisors (12447141).

20532315 is a wasteful number, since it uses less digits than its factorization.

20532315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 20532315 is about 4531.2597586102. The cubic root of 20532315 is about 273.8289153440.

Adding to 20532315 its reverse (51323502), we get a palindrome (71855817).

The spelling of 20532315 in words is "twenty million, five hundred thirty-two thousand, three hundred fifteen".