13100040 has 48 divisors (see below), whose sum is σ = 42576300. Its totient is φ = 3493248.

The previous prime is 13100039. The next prime is 13100051. The reversal of 13100040 is 4000131.

It can be written as a sum of positive squares in 2 ways, for example, as 12404484 + 695556 = 3522^2 + 834^2 .

It is a super-2 number, since 2×13100040² = 343222096003200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 13099995 and 13100031.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17835 + ... + 18554.

Almost surely, 2^13100040 is an apocalyptic number.

13100040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13100040 is an abundant number, since it is smaller than the sum of its proper divisors (29476260).

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

13100040 is a wasteful number, since it uses less digits than its factorization.

13100040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36406 (or 36399 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 13100040 is about 3619.3977399562. The cubic root of 13100040 is about 235.7350756948.

Adding to 13100040 its reverse (4000131), we get a palindrome (17100171).

Subtracting from 13100040 its reverse (4000131), we obtain a palindrome (9099909).

The spelling of 13100040 in words is "thirteen million, one hundred thousand, forty".