70105216 has 32 divisors (see below), whose sum is σ = 142045200. Its totient is φ = 34454784.

The previous prime is 70105207. The next prime is 70105253. The reversal of 70105216 is 61250107.

It is a tau number, because it is divible by the number of its divisors (32).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2911 + ... + 12193.

Almost surely, 2^70105216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70105216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71022600).

70105216 is an abundant number, since it is smaller than the sum of its proper divisors (71939984).

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

70105216 is an equidigital number, since it uses as much as digits as its factorization.

70105216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9356 (or 9344 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 70105216 is about 8372.8857629852. The cubic root of 70105216 is about 412.3349147793.

The spelling of 70105216 in words is "seventy million, one hundred five thousand, two hundred sixteen".