72880111 has 2 divisors, whose sum is σ = 72880112. Its totient is φ = 72880110.

The previous prime is 72880099. The next prime is 72880117. The reversal of 72880111 is 11108827.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72880111 - 2⁵ = 72880079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72880111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72880117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36440055 + 36440056.

It is an arithmetic number, because the mean of its divisors is an integer number (36440056).

Almost surely, 2^72880111 is an apocalyptic number.

72880111 is a deficient number, since it is larger than the sum of its proper divisors (1).

72880111 is an equidigital number, since it uses as much as digits as its factorization.

72880111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 28.

The square root of 72880111 is about 8536.9848892920. The cubic root of 72880111 is about 417.7050012157.

Adding to 72880111 its reverse (11108827), we get a palindrome (83988938).

The spelling of 72880111 in words is "seventy-two million, eight hundred eighty thousand, one hundred eleven".