13087690 has 64 divisors (see below), whose sum is σ = 30689280. Its totient is φ = 3896640.

The previous prime is 13087687. The next prime is 13087691. The reversal of 13087690 is 9678031.

It is a super-2 number, since 2×13087690² = 342575259072200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13087691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17341 + ... + 18079.

It is an arithmetic number, because the mean of its divisors is an integer number (479520).

Almost surely, 2^13087690 is an apocalyptic number.

13087690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13087690 is an abundant number, since it is smaller than the sum of its proper divisors (17601590).

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

13087690 is a wasteful number, since it uses less digits than its factorization.

13087690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 13087690 is about 3617.6912527191. The cubic root of 13087690 is about 235.6609730319.

It can be divided in two parts, 1308 and 7690, that added together give a palindrome (8998).

The spelling of 13087690 in words is "thirteen million, eighty-seven thousand, six hundred ninety".