70281868 has 12 divisors (see below), whose sum is σ = 123202800. Its totient is φ = 35081072.

The previous prime is 70281863. The next prime is 70281889. The reversal of 70281868 is 86818207.

It is a self number, because there is not a number n which added to its sum of digits gives 70281868.

It is not an unprimeable number, because it can be changed into a prime (70281863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12271 + ... + 17062.

It is an arithmetic number, because the mean of its divisors is an integer number (10266900).

Almost surely, 2^70281868 is an apocalyptic number.

It is an amenable number.

70281868 is a deficient number, since it is larger than the sum of its proper divisors (52920932).

70281868 is a wasteful number, since it uses less digits than its factorization.

70281868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29936 (or 29934 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 70281868 is about 8383.4281770646. The cubic root of 70281868 is about 412.6809598439.

The spelling of 70281868 in words is "seventy million, two hundred eighty-one thousand, eight hundred sixty-eight".