70002816 has 128 divisors (see below), whose sum is σ = 206203200. Its totient is φ = 20901888.

The previous prime is 70002811. The next prime is 70002883. The reversal of 70002816 is 61820007.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (70002811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184515 + ... + 184893.

Almost surely, 2^70002816 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 70002816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103101600).

70002816 is an abundant number, since it is smaller than the sum of its proper divisors (136200384).

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

70002816 is a wasteful number, since it uses less digits than its factorization.

70002816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446 (or 434 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 70002816 is about 8366.7685518365. The cubic root of 70002816 is about 412.1340563541.

The spelling of 70002816 in words is "seventy million, two thousand, eight hundred sixteen".