70004072 has 8 divisors (see below), whose sum is σ = 131257650. Its totient is φ = 35002032.

The previous prime is 70004071. The next prime is 70004089. The reversal of 70004072 is 27040007.

It can be written as a sum of positive squares in only one way, i.e., 66814276 + 3189796 = 8174^2 + 1786^2 .

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

It is not an unprimeable number, because it can be changed into a prime (70004071) 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, 4375247 + ... + 4375262.

Almost surely, 2^70004072 is an apocalyptic number.

It is an amenable number.

70004072 is a deficient number, since it is larger than the sum of its proper divisors (61253578).

70004072 is a wasteful number, since it uses less digits than its factorization.

70004072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8750515 (or 8750511 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 70004072 is about 8366.8436103467. The cubic root of 70004072 is about 412.1365211944.

Adding to 70004072 its reverse (27040007), we get a palindrome (97044079).

The spelling of 70004072 in words is "seventy million, four thousand, seventy-two".