70132320 has 144 divisors (see below), whose sum is σ = 242004672. Its totient is φ = 18493440.

The previous prime is 70132289. The next prime is 70132333. The reversal of 70132320 is 2323107.

It is a tau number, because it is divible by the number of its divisors (144).

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 = 70132293 and 70132302.

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, 162505 + ... + 162935.

It is an arithmetic number, because the mean of its divisors is an integer number (1680588).

Almost surely, 2^70132320 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 70132320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121002336).

70132320 is an abundant number, since it is smaller than the sum of its proper divisors (171872352).

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

70132320 is a wasteful number, since it uses less digits than its factorization.

70132320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 70132320 is about 8374.5041644267. The cubic root of 70132320 is about 412.3880467534.

Adding to 70132320 its reverse (2323107), we get a palindrome (72455427).

The spelling of 70132320 in words is "seventy million, one hundred thirty-two thousand, three hundred twenty".