70088728 has 16 divisors (see below), whose sum is σ = 137130480. Its totient is φ = 33520608.

The previous prime is 70088723. The next prime is 70088729. The reversal of 70088728 is 82788007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70088723) 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 in 3 ways as a sum of consecutive naturals, for example, 190275 + ... + 190642.

It is an arithmetic number, because the mean of its divisors is an integer number (8570655).

Almost surely, 2^70088728 is an apocalyptic number.

It is an amenable number.

70088728 is a deficient number, since it is larger than the sum of its proper divisors (67041752).

70088728 is a wasteful number, since it uses less digits than its factorization.

70088728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380946 (or 380942 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 40.

The square root of 70088728 is about 8371.9010983169. The cubic root of 70088728 is about 412.3025866516.

The spelling of 70088728 in words is "seventy million, eighty-eight thousand, seven hundred twenty-eight".