70128255 has 8 divisors (see below), whose sum is σ = 112205232. Its totient is φ = 37401728.

The previous prime is 70128241. The next prime is 70128299. The reversal of 70128255 is 55282107.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70128255 - 2¹⁴ = 70111871 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2337594 + ... + 2337623.

It is an arithmetic number, because the mean of its divisors is an integer number (14025654).

Almost surely, 2^70128255 is an apocalyptic number.

70128255 is a deficient number, since it is larger than the sum of its proper divisors (42076977).

70128255 is a wasteful number, since it uses less digits than its factorization.

70128255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4675225.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 70128255 is about 8374.2614599736. The cubic root of 70128255 is about 412.3800790062.

The spelling of 70128255 in words is "seventy million, one hundred twenty-eight thousand, two hundred fifty-five".