70742218 has 16 divisors (see below), whose sum is σ = 108784224. Its totient is φ = 34491600.

The previous prime is 70742207. The next prime is 70742251. The reversal of 70742218 is 81224707.

It is a super-2 number, since 2×70742218² = 10008922815119048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70742218.

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, 10921 + ... + 16147.

It is an arithmetic number, because the mean of its divisors is an integer number (6799014).

Almost surely, 2^70742218 is an apocalyptic number.

70742218 is a deficient number, since it is larger than the sum of its proper divisors (38042006).

70742218 is a wasteful number, since it uses less digits than its factorization.

70742218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5397.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 70742218 is about 8410.8393160255. The cubic root of 70742218 is about 413.5800271761.

The spelling of 70742218 in words is "seventy million, seven hundred forty-two thousand, two hundred eighteen".