70240320 has 168 divisors, whose sum is σ = 250225560. Its totient is φ = 18084864.

The previous prime is 70240309. The next prime is 70240343. The reversal of 70240320 is 2304207.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 82944 + 70157376 = 288^2 + 8376^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 70240293 and 70240302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2422066 + ... + 2422094.

Almost surely, 2^70240320 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 70240320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125112780).

70240320 is an abundant number, since it is smaller than the sum of its proper divisors (179985240).

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

70240320 is an equidigital number, since it uses as much as digits as its factorization.

70240320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 39 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 70240320 is about 8380.9498268394. The cubic root of 70240320 is about 412.5996233208.

Adding to 70240320 its reverse (2304207), we get a palindrome (72544527).

The spelling of 70240320 in words is "seventy million, two hundred forty thousand, three hundred twenty".