450708138 has 96 divisors (see below), whose sum is σ = 1075681152. Its totient is φ = 141134400.

The previous prime is 450708119. The next prime is 450708143. The reversal of 450708138 is 831807054.

450708138 is a `hidden beast` number, since 450 + 70 + 8 + 138 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 681528 + ... + 682188.

It is an arithmetic number, because the mean of its divisors is an integer number (11205012).

Almost surely, 2^450708138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 450708138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (537840576).

450708138 is an abundant number, since it is smaller than the sum of its proper divisors (624973014).

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

450708138 is a wasteful number, since it uses less digits than its factorization.

450708138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762 (or 750 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 450708138 is about 21229.8878470895. The cubic root of 450708138 is about 766.7111867867.

The spelling of 450708138 in words is "four hundred fifty million, seven hundred eight thousand, one hundred thirty-eight".