13780115 has 8 divisors (see below), whose sum is σ = 17508960. Its totient is φ = 10375552.

The previous prime is 13780103. The next prime is 13780127. The reversal of 13780115 is 51108731.

It is an interprime number because it is at equal distance from previous prime (13780103) and next prime (13780127).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13780115 - 2¹⁰ = 13779091 is a prime.

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, 80975 + ... + 81144.

It is an arithmetic number, because the mean of its divisors is an integer number (2188620).

Almost surely, 2^13780115 is an apocalyptic number.

13780115 is a deficient number, since it is larger than the sum of its proper divisors (3728845).

13780115 is a wasteful number, since it uses less digits than its factorization.

13780115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162141.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 13780115 is about 3712.1577283300. The cubic root of 13780115 is about 239.7457666639.

Adding to 13780115 its reverse (51108731), we get a palindrome (64888846).

The spelling of 13780115 in words is "thirteen million, seven hundred eighty thousand, one hundred fifteen".