134781808 has 30 divisors (see below), whose sum is σ = 298717736. Its totient is φ = 57710976.

The previous prime is 134781781. The next prime is 134781811. The reversal of 134781808 is 808187431.

It is a super-2 number, since 2×134781808² = 36332271535497728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122316 + ... + 123412.

Almost surely, 2^134781808 is an apocalyptic number.

It is an amenable number.

134781808 is an abundant number, since it is smaller than the sum of its proper divisors (163935928).

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

134781808 is an frugal number, since it uses more digits than its factorization.

134781808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209 (or 1106 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 134781808 is about 11609.5567529514. The cubic root of 134781808 is about 512.7162623289.

The spelling of 134781808 in words is "one hundred thirty-four million, seven hundred eighty-one thousand, eight hundred eight".