138026824 has 16 divisors (see below), whose sum is σ = 278708220. Its totient is φ = 63704640.

The previous prime is 138026813. The next prime is 138026831. The reversal of 138026824 is 428620831.

It can be written as a sum of positive squares in 2 ways, for example, as 135722500 + 2304324 = 11650^2 + 1518^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 138026824.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663487 + ... + 663694.

Almost surely, 2^138026824 is an apocalyptic number.

It is an amenable number.

138026824 is an abundant number, since it is smaller than the sum of its proper divisors (140681396).

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

138026824 is a wasteful number, since it uses less digits than its factorization.

138026824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327200 (or 1327196 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 138026824 is about 11748.4817742549. The cubic root of 138026824 is about 516.7984054400.

The spelling of 138026824 in words is "one hundred thirty-eight million, twenty-six thousand, eight hundred twenty-four".