138950574 has 48 divisors (see below), whose sum is σ = 324224208. Its totient is φ = 39583488.

The previous prime is 138950569. The next prime is 138950579. The reversal of 138950574 is 475059831.

It is an interprime number because it is at equal distance from previous prime (138950569) and next prime (138950579).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138950579) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 173944 + ... + 174740.

It is an arithmetic number, because the mean of its divisors is an integer number (6754671).

Almost surely, 2^138950574 is an apocalyptic number.

138950574 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 138950574, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162112104).

138950574 is an abundant number, since it is smaller than the sum of its proper divisors (185273634).

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

138950574 is a wasteful number, since it uses less digits than its factorization.

138950574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409 (or 1402 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 138950574 is about 11787.7298068797. The cubic root of 138950574 is about 517.9487409711.

The spelling of 138950574 in words is "one hundred thirty-eight million, nine hundred fifty thousand, five hundred seventy-four".