72304055 has 8 divisors (see below), whose sum is σ = 88060272. Its totient is φ = 56979648.

The previous prime is 72303991. The next prime is 72304061. The reversal of 72304055 is 55040327.

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

It is a cyclic number.

It is not a de Polignac number, because 72304055 - 2⁶ = 72303991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107582 + ... + 108251.

It is an arithmetic number, because the mean of its divisors is an integer number (11007534).

Almost surely, 2^72304055 is an apocalyptic number.

72304055 is a deficient number, since it is larger than the sum of its proper divisors (15756217).

72304055 is a wasteful number, since it uses less digits than its factorization.

72304055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215905.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 72304055 is about 8503.1791113677. The cubic root of 72304055 is about 416.6015532029.

The spelling of 72304055 in words is "seventy-two million, three hundred four thousand, fifty-five".