134987815 has 16 divisors (see below), whose sum is σ = 165748320. Its totient is φ = 105505920.

The previous prime is 134987789. The next prime is 134987833. The reversal of 134987815 is 518789431.

It is a happy number.

It is not a de Polignac number, because 134987815 - 2⁷ = 134987687 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46476 + ... + 49294.

It is an arithmetic number, because the mean of its divisors is an integer number (10359270).

Almost surely, 2^134987815 is an apocalyptic number.

134987815 is a deficient number, since it is larger than the sum of its proper divisors (30760505).

134987815 is a wasteful number, since it uses less digits than its factorization.

134987815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3042.

The product of its digits is 241920, while the sum is 46.

The square root of 134987815 is about 11618.4256678777. The cubic root of 134987815 is about 512.9773494224.

The spelling of 134987815 in words is "one hundred thirty-four million, nine hundred eighty-seven thousand, eight hundred fifteen".