134799840 has 288 divisors, whose sum is σ = 539675136. Its totient is φ = 29998080.

The previous prime is 134799827. The next prime is 134799857. The reversal of 134799840 is 48997431.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 433285 + ... + 433595.

It is an arithmetic number, because the mean of its divisors is an integer number (1873872).

Almost surely, 2^134799840 is an apocalyptic number.

134799840 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 134799840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269837568).

134799840 is an abundant number, since it is smaller than the sum of its proper divisors (404875296).

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

134799840 is a wasteful number, since it uses less digits than its factorization.

134799840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 134799840 is about 11610.3333285483. Note that the first 4 decimals coincide. The cubic root of 134799840 is about 512.7391261646.

The spelling of 134799840 in words is "one hundred thirty-four million, seven hundred ninety-nine thousand, eight hundred forty".