70243218 has 24 divisors (see below), whose sum is σ = 161146908. Its totient is φ = 22036992.

The previous prime is 70243193. The next prime is 70243223. The reversal of 70243218 is 81234207.

It can be written as a sum of positive squares in 2 ways, for example, as 68508729 + 1734489 = 8277^2 + 1317^2 .

It is a junction number, because it is equal to n+sod(n) for n = 70243191 and 70243200.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114471 + ... + 115082.

Almost surely, 2^70243218 is an apocalyptic number.

70243218 is an abundant number, since it is smaller than the sum of its proper divisors (90903690).

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

70243218 is a wasteful number, since it uses less digits than its factorization.

70243218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229578 (or 229575 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 70243218 is about 8381.1227171543. The cubic root of 70243218 is about 412.6052976366.

The spelling of 70243218 in words is "seventy million, two hundred forty-three thousand, two hundred eighteen".