72231105 has 16 divisors (see below), whose sum is σ = 115893504. Its totient is φ = 38415360.

The previous prime is 72231101. The next prime is 72231121. The reversal of 72231105 is 50113227.

It is not a de Polignac number, because 72231105 - 2² = 72231101 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72231101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1056 + ... + 12065.

It is an arithmetic number, because the mean of its divisors is an integer number (7243344).

Almost surely, 2^72231105 is an apocalyptic number.

It is an amenable number.

72231105 is a deficient number, since it is larger than the sum of its proper divisors (43662399).

72231105 is a wasteful number, since it uses less digits than its factorization.

72231105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13496.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 72231105 is about 8498.8884567336. Note that the first 3 decimals coincide. The cubic root of 72231105 is about 416.4613982701.

The spelling of 72231105 in words is "seventy-two million, two hundred thirty-one thousand, one hundred five".