136443444 has 24 divisors (see below), whose sum is σ = 325143168. Its totient is φ = 44513280.

The previous prime is 136443421. The next prime is 136443481. The reversal of 136443444 is 444344631.

It is a super-2 number, since 2×136443444² = 37233626821162272, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 120397 + ... + 121524.

It is an arithmetic number, because the mean of its divisors is an integer number (13547632).

Almost surely, 2^136443444 is an apocalyptic number.

It is an amenable number.

136443444 is an abundant number, since it is smaller than the sum of its proper divisors (188699724).

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

136443444 is a wasteful number, since it uses less digits than its factorization.

136443444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241975 (or 241973 counting only the distinct ones).

The product of its digits is 55296, while the sum is 33.

The square root of 136443444 is about 11680.9008214264. The cubic root of 136443444 is about 514.8146428182.

The spelling of 136443444 in words is "one hundred thirty-six million, four hundred forty-three thousand, four hundred forty-four".