70671328 has 72 divisors (see below), whose sum is σ = 174350232. Its totient is φ = 27949824.

The previous prime is 70671323. The next prime is 70671361. The reversal of 70671328 is 82317607.

It is a junction number, because it is equal to n+sod(n) for n = 70671293 and 70671302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70671323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18651 + ... + 22117.

It is an arithmetic number, because the mean of its divisors is an integer number (2421531).

Almost surely, 2^70671328 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 70671328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87175116).

70671328 is an abundant number, since it is smaller than the sum of its proper divisors (103678904).

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

70671328 is a wasteful number, since it uses less digits than its factorization.

70671328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3504 (or 3489 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 70671328 is about 8406.6240548748. The cubic root of 70671328 is about 413.4418330033.

The spelling of 70671328 in words is "seventy million, six hundred seventy-one thousand, three hundred twenty-eight".