13552740 has 144 divisors (see below), whose sum is σ = 44972928. Its totient is φ = 3290112.

The previous prime is 13552739. The next prime is 13552751. The reversal of 13552740 is 4725531.

It is a happy number.

13552740 is a `hidden beast` number, since 135 + 527 + 4 + 0 = 666.

13552740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 131529 + ... + 131631.

It is an arithmetic number, because the mean of its divisors is an integer number (312312).

Almost surely, 2^13552740 is an apocalyptic number.

13552740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13552740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22486464).

13552740 is an abundant number, since it is smaller than the sum of its proper divisors (31420188).

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

13552740 is a wasteful number, since it uses less digits than its factorization.

13552740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 13552740 is about 3681.4046232383. The cubic root of 13552740 is about 238.4198272250.

It can be divided in two parts, 1355 and 2740, that added together give a triangular number (4095 = T₉₀).

The spelling of 13552740 in words is "thirteen million, five hundred fifty-two thousand, seven hundred forty".