70020320 has 96 divisors (see below), whose sum is σ = 179988480. Its totient is φ = 25643520.

The previous prime is 70020319. The next prime is 70020341. The reversal of 70020320 is 2302007.

It is a junction number, because it is equal to n+sod(n) for n = 70020295 and 70020304.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 93869 + ... + 94611.

It is an arithmetic number, because the mean of its divisors is an integer number (1874880).

Almost surely, 2^70020320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70020320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89994240).

70020320 is an abundant number, since it is smaller than the sum of its proper divisors (109968160).

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

70020320 is a wasteful number, since it uses less digits than its factorization.

70020320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808 (or 800 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 14.

The square root of 70020320 is about 8367.8145294933. The cubic root of 70020320 is about 412.1684044643.

Adding to 70020320 its reverse (2302007), we get a palindrome (72322327).

The spelling of 70020320 in words is "seventy million, twenty thousand, three hundred twenty".