72476945 has 16 divisors (see below), whose sum is σ = 90916560. Its totient is φ = 55394304.

The previous prime is 72476941. The next prime is 72476947. The reversal of 72476945 is 54967427.

It can be written as a sum of positive squares in 8 ways, for example, as 22801 + 72454144 = 151^2 + 8512^2 .

It is a cyclic number.

It is not a de Polignac number, because 72476945 - 2² = 72476941 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 72476896 and 72476905.

It is not an unprimeable number, because it can be changed into a prime (72476941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11489 + ... + 16641.

It is an arithmetic number, because the mean of its divisors is an integer number (5682285).

Almost surely, 2^72476945 is an apocalyptic number.

It is an amenable number.

72476945 is a deficient number, since it is larger than the sum of its proper divisors (18439615).

72476945 is a wasteful number, since it uses less digits than its factorization.

72476945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5284.

The product of its digits is 423360, while the sum is 44.

The square root of 72476945 is about 8513.3392391000. The cubic root of 72476945 is about 416.9333414643.

The spelling of 72476945 in words is "seventy-two million, four hundred seventy-six thousand, nine hundred forty-five".