15138086 has 4 divisors (see below), whose sum is σ = 22707132. Its totient is φ = 7569042.

The previous prime is 15138031. The next prime is 15138091. The reversal of 15138086 is 68083151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68083151 = 23 ⋅2960137.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3784520 + ... + 3784523.

It is an arithmetic number, because the mean of its divisors is an integer number (5676783).

Almost surely, 2^15138086 is an apocalyptic number.

15138086 is a deficient number, since it is larger than the sum of its proper divisors (7569046).

15138086 is an equidigital number, since it uses as much as digits as its factorization.

15138086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7569045.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 15138086 is about 3890.7693326642. The cubic root of 15138086 is about 247.3756733668.

The spelling of 15138086 in words is "fifteen million, one hundred thirty-eight thousand, eighty-six".