13528669 has 16 divisors (see below), whose sum is σ = 17602560. Its totient is φ = 10082160.

The previous prime is 13528667. The next prime is 13528673. The reversal of 13528669 is 96682531.

13528669 = T₃₇₂ + T₃₇₃ + ... + T₅₀₉.

It is not a de Polignac number, because 13528669 - 2¹ = 13528667 is a prime.

It is a super-2 number, since 2×13528669² = 366049769823122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13528661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2049 + ... + 5590.

It is an arithmetic number, because the mean of its divisors is an integer number (1100160).

Almost surely, 2^13528669 is an apocalyptic number.

It is an amenable number.

13528669 is a deficient number, since it is larger than the sum of its proper divisors (4073891).

13528669 is a wasteful number, since it uses less digits than its factorization.

13528669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7680.

The product of its digits is 77760, while the sum is 40.

The square root of 13528669 is about 3678.1339018584. The cubic root of 13528669 is about 238.2785912168.

The spelling of 13528669 in words is "thirteen million, five hundred twenty-eight thousand, six hundred sixty-nine".