72070234 has 8 divisors (see below), whose sum is σ = 108207540. Its totient is φ = 36001056.

The previous prime is 72070213. The next prime is 72070237. The reversal of 72070234 is 43207027.

It can be written as a sum of positive squares in 2 ways, for example, as 66994225 + 5076009 = 8185^2 + 2253^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 72070199 and 72070208.

It is not an unprimeable number, because it can be changed into a prime (72070237) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 14299 + ... + 18670.

Almost surely, 2^72070234 is an apocalyptic number.

72070234 is a deficient number, since it is larger than the sum of its proper divisors (36137306).

72070234 is a wasteful number, since it uses less digits than its factorization.

72070234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34064.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 72070234 is about 8489.4189436027. The cubic root of 72070234 is about 416.1519915825.

It can be divided in two parts, 7207023 and 4, that added together give a palindrome (7207027).

The spelling of 72070234 in words is "seventy-two million, seventy thousand, two hundred thirty-four".