72204371 has 2 divisors, whose sum is σ = 72204372. Its totient is φ = 72204370.

The previous prime is 72204367. The next prime is 72204409. The reversal of 72204371 is 17340227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72204371 - 2² = 72204367 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72204371.

It is not a weakly prime, because it can be changed into another prime (72204071) 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 as a sum of consecutive naturals, namely, 36102185 + 36102186.

It is an arithmetic number, because the mean of its divisors is an integer number (36102186).

Almost surely, 2^72204371 is an apocalyptic number.

72204371 is a deficient number, since it is larger than the sum of its proper divisors (1).

72204371 is an equidigital number, since it uses as much as digits as its factorization.

72204371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 72204371 is about 8497.3155172678. The cubic root of 72204371 is about 416.4100120384.

Adding to 72204371 its reverse (17340227), we get a palindrome (89544598).

The spelling of 72204371 in words is "seventy-two million, two hundred four thousand, three hundred seventy-one".