70728488 has 16 divisors (see below), whose sum is σ = 139596000. Its totient is φ = 33502896.

The previous prime is 70728487. The next prime is 70728491. The reversal of 70728488 is 88482707.

It is a happy number.

It is a super-2 number, since 2×70728488² = 10005038029532288, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (70728481) 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 3 ways as a sum of consecutive naturals, for example, 232508 + ... + 232811.

It is an arithmetic number, because the mean of its divisors is an integer number (8724750).

Almost surely, 2^70728488 is an apocalyptic number.

It is an amenable number.

70728488 is a deficient number, since it is larger than the sum of its proper divisors (68867512).

70728488 is a wasteful number, since it uses less digits than its factorization.

70728488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465344 (or 465340 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 44.

The square root of 70728488 is about 8410.0230677448. The cubic root of 70728488 is about 413.5532688916.

The spelling of 70728488 in words is "seventy million, seven hundred twenty-eight thousand, four hundred eighty-eight".