70072018 has 16 divisors (see below), whose sum is σ = 108086400. Its totient is φ = 34053616.

The previous prime is 70072001. The next prime is 70072021. The reversal of 70072018 is 81027007.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 70071983 and 70072001.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11505 + ... + 16507.

It is an arithmetic number, because the mean of its divisors is an integer number (6755400).

Almost surely, 2^70072018 is an apocalyptic number.

70072018 is a deficient number, since it is larger than the sum of its proper divisors (38014382).

70072018 is a wasteful number, since it uses less digits than its factorization.

70072018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5201.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 70072018 is about 8370.9030576157. The cubic root of 70072018 is about 412.2698180738.

It can be divided in two parts, 7007 and 2018, that added together give a square (9025 = 95²).

The spelling of 70072018 in words is "seventy million, seventy-two thousand, eighteen".