72430655 has 8 divisors (see below), whose sum is σ = 94818384. Its totient is φ = 52676800.

The previous prime is 72430651. The next prime is 72430669. The reversal of 72430655 is 55603427.

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

It is not a de Polignac number, because 72430655 - 2² = 72430651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72430651) 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 7 ways as a sum of consecutive naturals, for example, 658406 + ... + 658515.

It is an arithmetic number, because the mean of its divisors is an integer number (11852298).

Almost surely, 2^72430655 is an apocalyptic number.

72430655 is a deficient number, since it is larger than the sum of its proper divisors (22387729).

72430655 is a wasteful number, since it uses less digits than its factorization.

72430655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316937.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 72430655 is about 8510.6201301668. The cubic root of 72430655 is about 416.8445594170.

The spelling of 72430655 in words is "seventy-two million, four hundred thirty thousand, six hundred fifty-five".