70004020 has 12 divisors (see below), whose sum is σ = 147008484. Its totient is φ = 28001600.

The previous prime is 70004017. The next prime is 70004023. The reversal of 70004020 is 2040007.

It is an interprime number because it is at equal distance from previous prime (70004017) and next prime (70004023).

It can be written as a sum of positive squares in 2 ways, for example, as 23464336 + 46539684 = 4844^2 + 6822^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70004023) 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, 1750081 + ... + 1750120.

It is an arithmetic number, because the mean of its divisors is an integer number (12250707).

Almost surely, 2^70004020 is an apocalyptic number.

It is an amenable number.

70004020 is an abundant number, since it is smaller than the sum of its proper divisors (77004464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70004020 is a wasteful number, since it uses less digits than its factorization.

70004020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3500210 (or 3500208 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 13.

The square root of 70004020 is about 8366.8405028422. The cubic root of 70004020 is about 412.1364191474.

Adding to 70004020 its reverse (2040007), we get a palindrome (72044027).

The spelling of 70004020 in words is "seventy million, four thousand, twenty".