70321738 has 8 divisors (see below), whose sum is σ = 105524388. Its totient is φ = 35146944.

The previous prime is 70321721. The next prime is 70321739. The reversal of 70321738 is 83712307.

It can be written as a sum of positive squares in 2 ways, for example, as 46144849 + 24176889 = 6793^2 + 4917^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (70321739) 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, 1320 + ... + 11932.

Almost surely, 2^70321738 is an apocalyptic number.

70321738 is a deficient number, since it is larger than the sum of its proper divisors (35202650).

70321738 is a wasteful number, since it uses less digits than its factorization.

70321738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13928.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 70321738 is about 8385.8057454248. The cubic root of 70321738 is about 412.7589812929.

The spelling of 70321738 in words is "seventy million, three hundred twenty-one thousand, seven hundred thirty-eight".