70381224 has 80 divisors (see below), whose sum is σ = 208761300. Its totient is φ = 22076928.

The previous prime is 70381217. The next prime is 70381247. The reversal of 70381224 is 42218307.

It can be written as a sum of positive squares in 2 ways, for example, as 67076100 + 3305124 = 8190^2 + 1818^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

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 19 ways as a sum of consecutive naturals, for example, 7822 + ... + 14210.

Almost surely, 2^70381224 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 70381224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104380650).

70381224 is an abundant number, since it is smaller than the sum of its proper divisors (138380076).

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

70381224 is a wasteful number, since it uses less digits than its factorization.

70381224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6424 (or 6411 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 70381224 is about 8389.3518223996. The cubic root of 70381224 is about 412.8753344121.

The spelling of 70381224 in words is "seventy million, three hundred eighty-one thousand, two hundred twenty-four".