70871328 has 96 divisors (see below), whose sum is σ = 225529920. Its totient is φ = 21473280.

The previous prime is 70871321. The next prime is 70871357. The reversal of 70871328 is 82317807.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 70871292 and 70871301.

It is not an unprimeable number, because it can be changed into a prime (70871321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5776 + ... + 13232.

It is an arithmetic number, because the mean of its divisors is an integer number (2349270).

Almost surely, 2^70871328 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 70871328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112764960).

70871328 is an abundant number, since it is smaller than the sum of its proper divisors (154658592).

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

70871328 is a wasteful number, since it uses less digits than its factorization.

70871328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7487 (or 7473 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 70871328 is about 8418.5110322432. The cubic root of 70871328 is about 413.8314794063.

The spelling of 70871328 in words is "seventy million, eight hundred seventy-one thousand, three hundred twenty-eight".