70005320 has 192 divisors, whose sum is σ = 212751360. Its totient is φ = 20428800.

The previous prime is 70005319. The next prime is 70005323. The reversal of 70005320 is 2350007.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70005323) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 366425 + ... + 366615.

It is an arithmetic number, because the mean of its divisors is an integer number (1108080).

Almost surely, 2^70005320 is an apocalyptic number.

70005320 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70005320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106375680).

70005320 is an abundant number, since it is smaller than the sum of its proper divisors (142746040).

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

70005320 is a wasteful number, since it uses less digits than its factorization.

70005320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 17.

The square root of 70005320 is about 8366.9181901104. The cubic root of 70005320 is about 412.1389703058.

Adding to 70005320 its reverse (2350007), we get a palindrome (72355327).

The spelling of 70005320 in words is "seventy million, five thousand, three hundred twenty".