13812740 has 24 divisors (see below), whose sum is σ = 29090880. Its totient is φ = 5509088.

The previous prime is 13812739. The next prime is 13812767. The reversal of 13812740 is 4721831.

13812740 = 278² + 279² + ... + 397².

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8081 + ... + 9639.

It is an arithmetic number, because the mean of its divisors is an integer number (1212120).

Almost surely, 2^13812740 is an apocalyptic number.

13812740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13812740 is an abundant number, since it is smaller than the sum of its proper divisors (15278140).

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

13812740 is a wasteful number, since it uses less digits than its factorization.

13812740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011 (or 2009 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 13812740 is about 3716.5494749835. The cubic root of 13812740 is about 239.9348202629.

Subtracting from 13812740 its reverse (4721831), we obtain a palindrome (9090909).

The spelling of 13812740 in words is "thirteen million, eight hundred twelve thousand, seven hundred forty".