70428155 has 16 divisors (see below), whose sum is σ = 101671680. Its totient is φ = 45751392.

The previous prime is 70428151. The next prime is 70428157. The reversal of 70428155 is 55182407.

It is not a de Polignac number, because 70428155 - 2² = 70428151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70428151) 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, 52289 + ... + 53618.

It is an arithmetic number, because the mean of its divisors is an integer number (6354480).

Almost surely, 2^70428155 is an apocalyptic number.

70428155 is a deficient number, since it is larger than the sum of its proper divisors (31243525).

70428155 is a wasteful number, since it uses less digits than its factorization.

70428155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105938.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 70428155 is about 8392.1484138449. The cubic root of 70428155 is about 412.9670840102.

The spelling of 70428155 in words is "seventy million, four hundred twenty-eight thousand, one hundred fifty-five".