13040532 has 18 divisors (see below), whose sum is σ = 32963658. Its totient is φ = 4346832.

The previous prime is 13040527. The next prime is 13040543. The reversal of 13040532 is 23504031.

13040532 is a `hidden beast` number, since 130 + 4 + 0 + 532 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11861136 + 1179396 = 3444^2 + 1086^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 181083 + ... + 181154.

Almost surely, 2^13040532 is an apocalyptic number.

13040532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13040532 is an abundant number, since it is smaller than the sum of its proper divisors (19923126).

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

13040532 is a wasteful number, since it uses less digits than its factorization.

13040532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362247 (or 362242 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 13040532 is about 3611.1676781894. The cubic root of 13040532 is about 235.3775852355.

Adding to 13040532 its reverse (23504031), we get a palindrome (36544563).

The spelling of 13040532 in words is "thirteen million, forty thousand, five hundred thirty-two".