70081420 has 24 divisors (see below), whose sum is σ = 147332304. Its totient is φ = 28001856.

The previous prime is 70081411. The next prime is 70081447. The reversal of 70081420 is 2418007.

It is a super-2 number, since 2×70081420² = 9822810858432800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70081391 and 70081400.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 28687 + ... + 31033.

It is an arithmetic number, because the mean of its divisors is an integer number (6138846).

Almost surely, 2^70081420 is an apocalyptic number.

It is an amenable number.

70081420 is an abundant number, since it is smaller than the sum of its proper divisors (77250884).

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

70081420 is a wasteful number, since it uses less digits than its factorization.

70081420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3849 (or 3847 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 70081420 is about 8371.4646269336. The cubic root of 70081420 is about 412.2882561873.

Adding to 70081420 its reverse (2418007), we get a palindrome (72499427).

The spelling of 70081420 in words is "seventy million, eighty-one thousand, four hundred twenty".