134511840 has 240 divisors, whose sum is σ = 484090992. Its totient is φ = 35168256.

The previous prime is 134511833. The next prime is 134511859. The reversal of 134511840 is 48115431.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1257067 + ... + 1257173.

Almost surely, 2^134511840 is an apocalyptic number.

134511840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 134511840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242045496).

134511840 is an abundant number, since it is smaller than the sum of its proper divisors (349579152).

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

134511840 is a wasteful number, since it uses less digits than its factorization.

134511840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 134511840 is about 11597.9239521563. The cubic root of 134511840 is about 512.3737099094.

The spelling of 134511840 in words is "one hundred thirty-four million, five hundred eleven thousand, eight hundred forty".