70194728 has 8 divisors (see below), whose sum is σ = 131615130. Its totient is φ = 35097360.

The previous prime is 70194727. The next prime is 70194731. The reversal of 70194728 is 82749107.

It can be written as a sum of positive squares in only one way, i.e., 70190884 + 3844 = 8378^2 + 62^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 70194691 and 70194700.

It is not an unprimeable number, because it can be changed into a prime (70194727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4387163 + ... + 4387178.

Almost surely, 2^70194728 is an apocalyptic number.

It is an amenable number.

70194728 is a deficient number, since it is larger than the sum of its proper divisors (61420402).

70194728 is a wasteful number, since it uses less digits than its factorization.

70194728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8774347 (or 8774343 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 70194728 is about 8378.2294072196. The cubic root of 70194728 is about 412.5103331357.

The spelling of 70194728 in words is "seventy million, one hundred ninety-four thousand, seven hundred twenty-eight".