13631740 has 48 divisors (see below), whose sum is σ = 31197600. Its totient is φ = 4983552.

The previous prime is 13631707. The next prime is 13631743. The reversal of 13631740 is 4713631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13631743) 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, 10402 + ... + 11638.

It is an arithmetic number, because the mean of its divisors is an integer number (649950).

Almost surely, 2^13631740 is an apocalyptic number.

13631740 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 13631740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15598800).

13631740 is an abundant number, since it is smaller than the sum of its proper divisors (17565860).

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

13631740 is a wasteful number, since it uses less digits than its factorization.

13631740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294 (or 1292 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 13631740 is about 3692.1186329803. The cubic root of 13631740 is about 238.8821860588.

The spelling of 13631740 in words is "thirteen million, six hundred thirty-one thousand, seven hundred forty".