70843530 has 32 divisors (see below), whose sum is σ = 174622464. Its totient is φ = 18380736.

The previous prime is 70843511. The next prime is 70843537. The reversal of 70843530 is 3534807.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (70843537) 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, 30802 + ... + 33021.

It is an arithmetic number, because the mean of its divisors is an integer number (5456952).

Almost surely, 2^70843530 is an apocalyptic number.

70843530 is an abundant number, since it is smaller than the sum of its proper divisors (103778934).

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

70843530 is a wasteful number, since it uses less digits than its factorization.

70843530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63870.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 70843530 is about 8416.8598657694. The cubic root of 70843530 is about 413.7773663531. Note that the first 3 decimals are identical.

The spelling of 70843530 in words is "seventy million, eight hundred forty-three thousand, five hundred thirty".