138201740 has 24 divisors (see below), whose sum is σ = 295701840. Its totient is φ = 54237248.

The previous prime is 138201727. The next prime is 138201773. The reversal of 138201740 is 47102831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64130 + ... + 66249.

It is an arithmetic number, because the mean of its divisors is an integer number (12320910).

Almost surely, 2^138201740 is an apocalyptic number.

138201740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138201740 is an abundant number, since it is smaller than the sum of its proper divisors (157500100).

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

138201740 is a wasteful number, since it uses less digits than its factorization.

138201740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130441 (or 130439 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 138201740 is about 11755.9236132258. The cubic root of 138201740 is about 517.0166194289.

The spelling of 138201740 in words is "one hundred thirty-eight million, two hundred one thousand, seven hundred forty".