13449240 has 160 divisors (see below), whose sum is σ = 51749280. Its totient is φ = 3068928.

The previous prime is 13449221. The next prime is 13449253. The reversal of 13449240 is 4294431.

13449240 is a `hidden beast` number, since 134 + 492 + 40 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 22384 + ... + 22976.

It is an arithmetic number, because the mean of its divisors is an integer number (323433).

Almost surely, 2^13449240 is an apocalyptic number.

13449240 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 13449240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25874640).

13449240 is an abundant number, since it is smaller than the sum of its proper divisors (38300040).

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

13449240 is a wasteful number, since it uses less digits than its factorization.

13449240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 13449240 is about 3667.3205477569. The cubic root of 13449240 is about 237.8113515802.

It can be divided in two parts, 13449 and 240, that added together give a square (13689 = 117²).

The spelling of 13449240 in words is "thirteen million, four hundred forty-nine thousand, two hundred forty".