70170730 has 32 divisors (see below), whose sum is σ = 152845056. Its totient is φ = 22642944.

The previous prime is 70170719. The next prime is 70170733. The reversal of 70170730 is 3707107.

It is a junction number, because it is equal to n+sod(n) for n = 70170695 and 70170704.

It is not an unprimeable number, because it can be changed into a prime (70170733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28294 + ... + 30673.

It is an arithmetic number, because the mean of its divisors is an integer number (4776408).

Almost surely, 2^70170730 is an apocalyptic number.

70170730 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

70170730 is an abundant number, since it is smaller than the sum of its proper divisors (82674326).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70170730 is a wasteful number, since it uses less digits than its factorization.

70170730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58998.

The product of its (nonzero) digits is 1029, while the sum is 25.

The square root of 70170730 is about 8376.7971206184. The cubic root of 70170730 is about 412.4633184401.

Adding to 70170730 its reverse (3707107), we get a palindrome (73877837).

The spelling of 70170730 in words is "seventy million, one hundred seventy thousand, seven hundred thirty".