70528105 has 8 divisors (see below), whose sum is σ = 86921352. Its totient is φ = 54897408.

The previous prime is 70528103. The next prime is 70528109. The reversal of 70528105 is 50182507.

It can be written as a sum of positive squares in 4 ways, for example, as 26491609 + 44036496 = 5147^2 + 6636^2 .

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 70528105 - 2¹ = 70528103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70528103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190432 + ... + 190801.

It is an arithmetic number, because the mean of its divisors is an integer number (10865169).

Almost surely, 2^70528105 is an apocalyptic number.

It is an amenable number.

70528105 is a deficient number, since it is larger than the sum of its proper divisors (16393247).

70528105 is a wasteful number, since it uses less digits than its factorization.

70528105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381275.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 70528105 is about 8398.1012735022. The cubic root of 70528105 is about 413.1623494284.

The spelling of 70528105 in words is "seventy million, five hundred twenty-eight thousand, one hundred five".