70038450 has 144 divisors (see below), whose sum is σ = 201254976. Its totient is φ = 17424000.

The previous prime is 70038439. The next prime is 70038467. The reversal of 70038450 is 5483007.

It is a Curzon number.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 693400 + ... + 693500.

It is an arithmetic number, because the mean of its divisors is an integer number (1397604).

Almost surely, 2^70038450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70038450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100627488).

70038450 is an abundant number, since it is smaller than the sum of its proper divisors (131216526).

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

70038450 is a wasteful number, since it uses less digits than its factorization.

70038450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 70038450 is about 8368.8977768879. The cubic root of 70038450 is about 412.2039749403.

The spelling of 70038450 in words is "seventy million, thirty-eight thousand, four hundred fifty".