72003005 has 8 divisors (see below), whose sum is σ = 86601312. Its totient is φ = 57470608.

The previous prime is 72002981. The next prime is 72003037. The reversal of 72003005 is 50030027.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72003005 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, 14039 + ... + 18468.

It is an arithmetic number, because the mean of its divisors is an integer number (10825164).

Almost surely, 2^72003005 is an apocalyptic number.

It is an amenable number.

72003005 is a deficient number, since it is larger than the sum of its proper divisors (14598307).

72003005 is a wasteful number, since it uses less digits than its factorization.

72003005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32955.

The product of its (nonzero) digits is 210, while the sum is 17.

The square root of 72003005 is about 8485.4584437142. The cubic root of 72003005 is about 416.0225521705.

The spelling of 72003005 in words is "seventy-two million, three thousand, five".