134487881 has 16 divisors (see below), whose sum is σ = 149126208. Its totient is φ = 120268800.

The previous prime is 134487869. The next prime is 134487883. The reversal of 134487881 is 188784431.

It is a cyclic number.

It is not a de Polignac number, because 134487881 - 2²² = 130293577 is a prime.

It is a super-2 number, since 2×134487881² = 36173980271740322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (134487883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256886 + ... + 257408.

It is an arithmetic number, because the mean of its divisors is an integer number (9320388).

Almost surely, 2^134487881 is an apocalyptic number.

134487881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

134487881 is a deficient number, since it is larger than the sum of its proper divisors (14638327).

134487881 is a wasteful number, since it uses less digits than its factorization.

134487881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872.

The product of its digits is 172032, while the sum is 44.

The square root of 134487881 is about 11596.8910057825. The cubic root of 134487881 is about 512.3432870840.

The spelling of 134487881 in words is "one hundred thirty-four million, four hundred eighty-seven thousand, eight hundred eighty-one".