70128361 has 8 divisors (see below), whose sum is σ = 70972704. Its totient is φ = 69288960.

The previous prime is 70128347. The next prime is 70128397. The reversal of 70128361 is 16382107.

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 70128361 - 2⁵ = 70128329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70128301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32626 + ... + 34708.

It is an arithmetic number, because the mean of its divisors is an integer number (8871588).

Almost surely, 2^70128361 is an apocalyptic number.

It is an amenable number.

70128361 is a deficient number, since it is larger than the sum of its proper divisors (844343).

70128361 is a wasteful number, since it uses less digits than its factorization.

70128361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2471.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 70128361 is about 8374.2677888876. The cubic root of 70128361 is about 412.3802867791.

The spelling of 70128361 in words is "seventy million, one hundred twenty-eight thousand, three hundred sixty-one".