138178048 has 20 divisors (see below), whose sum is σ = 276087240. Its totient is φ = 69088768.

The previous prime is 138177973. The next prime is 138178099. The reversal of 138178048 is 840871831.

It is a self number, because there is not a number n which added to its sum of digits gives 138178048.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134428 + ... + 135451.

It is an arithmetic number, because the mean of its divisors is an integer number (13804362).

Almost surely, 2^138178048 is an apocalyptic number.

It is an amenable number.

138178048 is a deficient number, since it is larger than the sum of its proper divisors (137909192).

138178048 is an frugal number, since it uses more digits than its factorization.

138178048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269897 (or 269881 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 138178048 is about 11754.9159078234. The cubic root of 138178048 is about 516.9870735931.

The spelling of 138178048 in words is "one hundred thirty-eight million, one hundred seventy-eight thousand, forty-eight".