13404528 has 50 divisors (see below), whose sum is σ = 38800344. Its totient is φ = 4467744.

The previous prime is 13404511. The next prime is 13404529. The reversal of 13404528 is 82540431.

13404528 is a `hidden beast` number, since 134 + 0 + 4 + 528 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13404529) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3876 + ... + 6467.

Almost surely, 2^13404528 is an apocalyptic number.

13404528 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13404528 is an abundant number, since it is smaller than the sum of its proper divisors (25395816).

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

13404528 is a wasteful number, since it uses less digits than its factorization.

13404528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10363 (or 10348 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 13404528 is about 3661.2194689748. The cubic root of 13404528 is about 237.5475243770.

Adding to 13404528 its reverse (82540431), we get a palindrome (95944959).

The spelling of 13404528 in words is "thirteen million, four hundred four thousand, five hundred twenty-eight".