13122487 has 8 divisors (see below), whose sum is σ = 15879456. Its totient is φ = 10586112.

The previous prime is 13122481. The next prime is 13122493. The reversal of 13122487 is 78422131.

It is an interprime number because it is at equal distance from previous prime (13122481) and next prime (13122493).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13122487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13122481) 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, 55018 + ... + 55255.

It is an arithmetic number, because the mean of its divisors is an integer number (1984932).

Almost surely, 2^13122487 is an apocalyptic number.

13122487 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13122487 is a deficient number, since it is larger than the sum of its proper divisors (2756969).

13122487 is a wasteful number, since it uses less digits than its factorization.

13122487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110297.

The product of its digits is 2688, while the sum is 28.

The square root of 13122487 is about 3622.4973429942. The cubic root of 13122487 is about 235.8696433692.

It can be divided in two parts, 13 and 122487, that added together give a square (122500 = 350²).

The spelling of 13122487 in words is "thirteen million, one hundred twenty-two thousand, four hundred eighty-seven".