137444436 has 72 divisors (see below), whose sum is σ = 355240704. Its totient is φ = 44798400.

The previous prime is 137444401. The next prime is 137444443. The reversal of 137444436 is 634444731.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (96768) is a multiple of the sum of its prime divisors (576).

It is a self number, because there is not a number n which added to its sum of digits gives 137444436.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 374325 + ... + 374691.

Almost surely, 2^137444436 is an apocalyptic number.

It is an amenable number.

137444436 is an abundant number, since it is smaller than the sum of its proper divisors (217796268).

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

137444436 is a wasteful number, since it uses less digits than its factorization.

137444436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581 (or 576 counting only the distinct ones).

The product of its digits is 96768, while the sum is 36.

The square root of 137444436 is about 11723.6699032342. The cubic root of 137444436 is about 516.0705239825.

The spelling of 137444436 in words is "one hundred thirty-seven million, four hundred forty-four thousand, four hundred thirty-six".