138066450 has 24 divisors (see below), whose sum is σ = 342405168. Its totient is φ = 36817680.

The previous prime is 138066443. The next prime is 138066457. The reversal of 138066450 is 54660831.

It is an interprime number because it is at equal distance from previous prime (138066443) and next prime (138066457).

It is not an unprimeable number, because it can be changed into a prime (138066457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 460072 + ... + 460371.

It is an arithmetic number, because the mean of its divisors is an integer number (14266882).

Almost surely, 2^138066450 is an apocalyptic number.

138066450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138066450 is an abundant number, since it is smaller than the sum of its proper divisors (204338718).

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

138066450 is a wasteful number, since it uses less digits than its factorization.

138066450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920458 (or 920453 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 138066450 is about 11750.1680839042. The cubic root of 138066450 is about 516.8478564419.

The spelling of 138066450 in words is "one hundred thirty-eight million, sixty-six thousand, four hundred fifty".