72344770 has 8 divisors (see below), whose sum is σ = 130220604. Its totient is φ = 28937904.

The previous prime is 72344749. The next prime is 72344771. The reversal of 72344770 is 7744327.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 67223601 + 5121169 = 8199^2 + 2263^2 .

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 (72344771) 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, 3617229 + ... + 3617248.

Almost surely, 2^72344770 is an apocalyptic number.

72344770 is a deficient number, since it is larger than the sum of its proper divisors (57875834).

72344770 is a wasteful number, since it uses less digits than its factorization.

72344770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7234484.

The product of its (nonzero) digits is 32928, while the sum is 34.

The square root of 72344770 is about 8505.5728790012. The cubic root of 72344770 is about 416.6797357679.

The spelling of 72344770 in words is "seventy-two million, three hundred forty-four thousand, seven hundred seventy".