72202945 has 16 divisors (see below), whose sum is σ = 92312640. Its totient is φ = 54057024.

The previous prime is 72202943. The next prime is 72202967. The reversal of 72202945 is 54920227.

It is a cyclic number.

It is not a de Polignac number, because 72202945 - 2¹ = 72202943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72202943) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3307 + ... + 12463.

It is an arithmetic number, because the mean of its divisors is an integer number (5769540).

Almost surely, 2^72202945 is an apocalyptic number.

It is an amenable number.

72202945 is a deficient number, since it is larger than the sum of its proper divisors (20109695).

72202945 is a wasteful number, since it uses less digits than its factorization.

72202945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9264.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 72202945 is about 8497.2316080003. The cubic root of 72202945 is about 416.4072707243.

The spelling of 72202945 in words is "seventy-two million, two hundred two thousand, nine hundred forty-five".