137724438 has 16 divisors (see below), whose sum is σ = 275944896. Its totient is φ = 45825480.

The previous prime is 137724409. The next prime is 137724439. The reversal of 137724438 is 834427731.

It is a junction number, because it is equal to n+sod(n) for n = 137724396 and 137724405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137724439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17008 + ... + 23763.

It is an arithmetic number, because the mean of its divisors is an integer number (17246556).

Almost surely, 2^137724438 is an apocalyptic number.

137724438 is an abundant number, since it is smaller than the sum of its proper divisors (138220458).

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

137724438 is a wasteful number, since it uses less digits than its factorization.

137724438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41339.

The product of its digits is 112896, while the sum is 39.

The square root of 137724438 is about 11735.6055659689. The cubic root of 137724438 is about 516.4207328093.

The spelling of 137724438 in words is "one hundred thirty-seven million, seven hundred twenty-four thousand, four hundred thirty-eight".