70000320 has 224 divisors, whose sum is σ = 245790720. Its totient is φ = 16773120.

The previous prime is 70000319. The next prime is 70000331. The reversal of 70000320 is 2300007.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 70000296 and 70000305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 886041 + ... + 886119.

It is an arithmetic number, because the mean of its divisors is an integer number (1097280).

Almost surely, 2^70000320 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 70000320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122895360).

70000320 is an abundant number, since it is smaller than the sum of its proper divisors (175790400).

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

70000320 is a wasteful number, since it uses less digits than its factorization.

70000320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 12.

The square root of 70000320 is about 8366.6193889766. The cubic root of 70000320 is about 412.1291579853.

Adding to 70000320 its reverse (2300007), we get a palindrome (72300327).

The spelling of 70000320 in words is "seventy million, three hundred twenty", and thus it is an aban number.