134223840 has 144 divisors (see below), whose sum is σ = 485070768. Its totient is φ = 33681408.

The previous prime is 134223833. The next prime is 134223871. The reversal of 134223840 is 48322431.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21739 + ... + 27221.

It is an arithmetic number, because the mean of its divisors is an integer number (3368547).

Almost surely, 2^134223840 is an apocalyptic number.

134223840 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 134223840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242535384).

134223840 is an abundant number, since it is smaller than the sum of its proper divisors (350846928).

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

134223840 is a wasteful number, since it uses less digits than its factorization.

134223840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5521 (or 5510 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 134223840 is about 11585.5012839324. The cubic root of 134223840 is about 512.0077716919.

The spelling of 134223840 in words is "one hundred thirty-four million, two hundred twenty-three thousand, eight hundred forty".