70381328 has 20 divisors (see below), whose sum is σ = 136545948. Its totient is φ = 35143680.

The previous prime is 70381303. The next prime is 70381349. The reversal of 70381328 is 82318307.

It can be written as a sum of positive squares in 2 ways, for example, as 18079504 + 52301824 = 4252^2 + 7232^2 .

It is a junction number, because it is equal to n+sod(n) for n = 70381294 and 70381303.

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, 11600 + ... + 16592.

Almost surely, 2^70381328 is an apocalyptic number.

It is an amenable number.

70381328 is a deficient number, since it is larger than the sum of its proper divisors (66164620).

70381328 is a wasteful number, since it uses less digits than its factorization.

70381328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5882 (or 5876 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 70381328 is about 8389.3580207308. The cubic root of 70381328 is about 412.8755377761.

The spelling of 70381328 in words is "seventy million, three hundred eighty-one thousand, three hundred twenty-eight".