138284980 has 24 divisors (see below), whose sum is σ = 290626560. Its totient is φ = 55270560.

The previous prime is 138284977. The next prime is 138284989. The reversal of 138284980 is 89482831.

138284980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138284989) 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, 39085 + ... + 42475.

It is an arithmetic number, because the mean of its divisors is an integer number (12109440).

Almost surely, 2^138284980 is an apocalyptic number.

138284980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138284980 is an abundant number, since it is smaller than the sum of its proper divisors (152341580).

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

138284980 is a wasteful number, since it uses less digits than its factorization.

138284980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5439 (or 5437 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 138284980 is about 11759.4634231329. The cubic root of 138284980 is about 517.1203996608.

The spelling of 138284980 in words is "one hundred thirty-eight million, two hundred eighty-four thousand, nine hundred eighty".