70028305 has 8 divisors (see below), whose sum is σ = 85411944. Its totient is φ = 55104000.

The previous prime is 70028293. The next prime is 70028311. The reversal of 70028305 is 50382007.

It can be written as a sum of positive squares in 4 ways, for example, as 6012304 + 64016001 = 2452^2 + 8001^2 .

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

It is not a de Polignac number, because 70028305 - 2⁷ = 70028177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70028305.

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, 114496 + ... + 115105.

It is an arithmetic number, because the mean of its divisors is an integer number (10676493).

Almost surely, 2^70028305 is an apocalyptic number.

It is an amenable number.

70028305 is a deficient number, since it is larger than the sum of its proper divisors (15383639).

70028305 is a wasteful number, since it uses less digits than its factorization.

70028305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229667.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 70028305 is about 8368.2916416674. The cubic root of 70028305 is about 412.1840715336.

The spelling of 70028305 in words is "seventy million, twenty-eight thousand, three hundred five".