135443872 has 48 divisors (see below), whose sum is σ = 280203840. Its totient is φ = 64323072.

The previous prime is 135443857. The next prime is 135443887. The reversal of 135443872 is 278344531.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (135443857) and next prime (135443887).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119404 + ... + 120532.

It is an arithmetic number, because the mean of its divisors is an integer number (5837580).

Almost surely, 2^135443872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135443872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140101920).

135443872 is an abundant number, since it is smaller than the sum of its proper divisors (144759968).

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

135443872 is a wasteful number, since it uses less digits than its factorization.

135443872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325 (or 1317 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 135443872 is about 11638.0355730682. The cubic root of 135443872 is about 513.5543988913.

The spelling of 135443872 in words is "one hundred thirty-five million, four hundred forty-three thousand, eight hundred seventy-two".