138402848 has 96 divisors (see below), whose sum is σ = 309173760. Its totient is φ = 60641280.

The previous prime is 138402833. The next prime is 138402857. The reversal of 138402848 is 848204831.

It is a super-2 number, since 2×138402848² = 38310696669022208, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488915 + ... + 489197.

It is an arithmetic number, because the mean of its divisors is an integer number (3220560).

Almost surely, 2^138402848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138402848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154586880).

138402848 is an abundant number, since it is smaller than the sum of its proper divisors (170770912).

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

138402848 is a wasteful number, since it uses less digits than its factorization.

138402848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 38.

The square root of 138402848 is about 11764.4739788909. The cubic root of 138402848 is about 517.2672814549.

The spelling of 138402848 in words is "one hundred thirty-eight million, four hundred two thousand, eight hundred forty-eight".