72880403 has 2 divisors, whose sum is σ = 72880404. Its totient is φ = 72880402.

The previous prime is 72880373. The next prime is 72880427. The reversal of 72880403 is 30408827.

It is a strong prime.

It is an emirp because it is prime and its reverse (30408827) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72880403 - 2²² = 68686099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72880403.

It is not a weakly prime, because it can be changed into another prime (72880433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36440201 + 36440202.

It is an arithmetic number, because the mean of its divisors is an integer number (36440202).

Almost surely, 2^72880403 is an apocalyptic number.

72880403 is a deficient number, since it is larger than the sum of its proper divisors (1).

72880403 is an equidigital number, since it uses as much as digits as its factorization.

72880403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 72880403 is about 8537.0019913316. The cubic root of 72880403 is about 417.7055590711.

The spelling of 72880403 in words is "seventy-two million, eight hundred eighty thousand, four hundred three".