13540906 has 8 divisors (see below), whose sum is σ = 20806884. Its totient is φ = 6605280.

The previous prime is 13540897. The next prime is 13540931. The reversal of 13540906 is 60904531.

It can be written as a sum of positive squares in 2 ways, for example, as 9703225 + 3837681 = 3115^2 + 1959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×13540906² = 366712270601672, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 82485 + ... + 82648.

Almost surely, 2^13540906 is an apocalyptic number.

13540906 is a deficient number, since it is larger than the sum of its proper divisors (7265978).

13540906 is a wasteful number, since it uses less digits than its factorization.

13540906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165176.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 13540906 is about 3679.7970052708. The cubic root of 13540906 is about 238.3504124339.

It can be divided in two parts, 135 and 40906, that added together give a triangular number (41041 = T₂₈₆).

The spelling of 13540906 in words is "thirteen million, five hundred forty thousand, nine hundred six".