72430922 has 8 divisors (see below), whose sum is σ = 112392900. Its totient is φ = 34966624.

The previous prime is 72430921. The next prime is 72430957. The reversal of 72430922 is 22903427.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 68740681 + 3690241 = 8291^2 + 1921^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (72430921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 624347 + ... + 624462.

Almost surely, 2^72430922 is an apocalyptic number.

72430922 is a deficient number, since it is larger than the sum of its proper divisors (39961978).

72430922 is a wasteful number, since it uses less digits than its factorization.

72430922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248840.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 72430922 is about 8510.6358164358. The cubic root of 72430922 is about 416.8450716189.

The spelling of 72430922 in words is "seventy-two million, four hundred thirty thousand, nine hundred twenty-two".