70957728 has 96 divisors (see below), whose sum is σ = 219179520. Its totient is φ = 22256640.

The previous prime is 70957727. The next prime is 70957739. The reversal of 70957728 is 82775907.

70957728 is a `hidden beast` number, since 70 + 9 + 577 + 2 + 8 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (70957727) 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, 12273 + ... + 17103.

It is an arithmetic number, because the mean of its divisors is an integer number (2283120).

Almost surely, 2^70957728 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 70957728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109589760).

70957728 is an abundant number, since it is smaller than the sum of its proper divisors (148221792).

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

70957728 is a wasteful number, since it uses less digits than its factorization.

70957728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4867 (or 4853 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 45.

The square root of 70957728 is about 8423.6410179922. The cubic root of 70957728 is about 413.9995799198. Note that the first 3 decimals are identical.

The spelling of 70957728 in words is "seventy million, nine hundred fifty-seven thousand, seven hundred twenty-eight".