72200905 has 8 divisors (see below), whose sum is σ = 99018432. Its totient is φ = 49509168.

The previous prime is 72200899. The next prime is 72200911. The reversal of 72200905 is 50900227.

It is an interprime number because it is at equal distance from previous prime (72200899) and next prime (72200911).

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 72200905 - 2⁵ = 72200873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72200905.

It is an unprimeable number.

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, 1031407 + ... + 1031476.

It is an arithmetic number, because the mean of its divisors is an integer number (12377304).

Almost surely, 2^72200905 is an apocalyptic number.

It is an amenable number.

72200905 is a deficient number, since it is larger than the sum of its proper divisors (26817527).

72200905 is a wasteful number, since it uses less digits than its factorization.

72200905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062895.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 72200905 is about 8497.1115680565. Note that the first 3 decimals coincide. The cubic root of 72200905 is about 416.4033490060.

The spelling of 72200905 in words is "seventy-two million, two hundred thousand, nine hundred five".