138794500 has 96 divisors (see below), whose sum is σ = 330954624. Its totient is φ = 50544000.

The previous prime is 138794473. The next prime is 138794507. The reversal of 138794500 is 5497831.

It is a self number, because there is not a number n which added to its sum of digits gives 138794500.

It is not an unprimeable number, because it can be changed into a prime (138794507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 851419 + ... + 851581.

It is an arithmetic number, because the mean of its divisors is an integer number (3447444).

Almost surely, 2^138794500 is an apocalyptic number.

138794500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138794500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165477312).

138794500 is an abundant number, since it is smaller than the sum of its proper divisors (192160124).

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

138794500 is a wasteful number, since it uses less digits than its factorization.

138794500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 138794500 is about 11781.1077577620. The cubic root of 138794500 is about 517.7547424503.

The spelling of 138794500 in words is "one hundred thirty-eight million, seven hundred ninety-four thousand, five hundred".