13140648 has 24 divisors (see below), whose sum is σ = 35589450. Its totient is φ = 4380192.

The previous prime is 13140607. The next prime is 13140649. The reversal of 13140648 is 84604131.

13140648 is a `hidden beast` number, since 1 + 3 + 14 + 0 + 648 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12404484 + 736164 = 3522^2 + 858^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×13140648³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (13140649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 91183 + ... + 91326.

Almost surely, 2^13140648 is an apocalyptic number.

13140648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13140648 is an abundant number, since it is smaller than the sum of its proper divisors (22448802).

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

13140648 is a wasteful number, since it uses less digits than its factorization.

13140648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182521 (or 182514 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 13140648 is about 3625.0031724124. The cubic root of 13140648 is about 235.9784046121.

Adding to 13140648 its reverse (84604131), we get a palindrome (97744779).

The spelling of 13140648 in words is "thirteen million, one hundred forty thousand, six hundred forty-eight".