72204019 has 2 divisors, whose sum is σ = 72204020. Its totient is φ = 72204018.

The previous prime is 72204001. The next prime is 72204029. The reversal of 72204019 is 91040227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72204019 - 2⁹ = 72203507 is a prime.

It is a super-2 number, since 2×72204019² = 10426840719504722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72203984 and 72204002.

It is not a weakly prime, because it can be changed into another prime (72204029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36102009 + 36102010.

It is an arithmetic number, because the mean of its divisors is an integer number (36102010).

Almost surely, 2^72204019 is an apocalyptic number.

72204019 is a deficient number, since it is larger than the sum of its proper divisors (1).

72204019 is an equidigital number, since it uses as much as digits as its factorization.

72204019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 72204019 is about 8497.2948048188. The cubic root of 72204019 is about 416.4093353639.

The spelling of 72204019 in words is "seventy-two million, two hundred four thousand, nineteen".