70212944 has 30 divisors (see below), whose sum is σ = 141091230. Its totient is φ = 33808768.

The previous prime is 70212943. The next prime is 70212949. The reversal of 70212944 is 44921207.

It can be written as a sum of positive squares in 3 ways, for example, as 1123600 + 69089344 = 1060^2 + 8312^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70212943) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 180302 + ... + 180690.

It is an arithmetic number, because the mean of its divisors is an integer number (4703041).

Almost surely, 2^70212944 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 70212944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70545615).

70212944 is an abundant number, since it is smaller than the sum of its proper divisors (70878286).

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

70212944 is an equidigital number, since it uses as much as digits as its factorization.

70212944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815 (or 420 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 70212944 is about 8379.3164399013. The cubic root of 70212944 is about 412.5460131102.

Multiplying 70212944 by its sum of digits (29), we get a square (2036175376 = 45124²).

70212944 divided by its sum of digits (29) gives a square (2421136 = 1556²).

The spelling of 70212944 in words is "seventy million, two hundred twelve thousand, nine hundred forty-four".