13798540 has 24 divisors (see below), whose sum is σ = 33116832. Its totient is φ = 4730880.

The previous prime is 13798537. The next prime is 13798549. The reversal of 13798540 is 4589731.

13798540 = 1401² + 1402² + ... + 1407².

It is a super-2 number, since 2×13798540² = 380799412263200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13798540.

It is not an unprimeable number, because it can be changed into a prime (13798549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49141 + ... + 49420.

It is an arithmetic number, because the mean of its divisors is an integer number (1379868).

Almost surely, 2^13798540 is an apocalyptic number.

13798540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13798540 is an abundant number, since it is smaller than the sum of its proper divisors (19318292).

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

13798540 is a wasteful number, since it uses less digits than its factorization.

13798540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98577 (or 98575 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 13798540 is about 3714.6386096093. The cubic root of 13798540 is about 239.8525714924.

The spelling of 13798540 in words is "thirteen million, seven hundred ninety-eight thousand, five hundred forty".