138244950 has 216 divisors, whose sum is σ = 420093648. Its totient is φ = 32503680.

The previous prime is 138244949. The next prime is 138245011. The reversal of 138244950 is 59442831.

It is a super-2 number, since 2×138244950² = 38223332401005000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 3736332 + ... + 3736368.

It is an arithmetic number, because the mean of its divisors is an integer number (1944878).

Almost surely, 2^138244950 is an apocalyptic number.

138244950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 138244950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210046824).

138244950 is an abundant number, since it is smaller than the sum of its proper divisors (281848698).

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

138244950 is a wasteful number, since it uses less digits than its factorization.

138244950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 138244950 is about 11757.7612664997. The cubic root of 138244950 is about 517.0704970917.

The spelling of 138244950 in words is "one hundred thirty-eight million, two hundred forty-four thousand, nine hundred fifty".