72026789 has 2 divisors, whose sum is σ = 72026790. Its totient is φ = 72026788.

The previous prime is 72026783. The next prime is 72026821. The reversal of 72026789 is 98762027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58262689 + 13764100 = 7633^2 + 3710^2 .

It is a cyclic number.

It is not a de Polignac number, because 72026789 - 2⁸ = 72026533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72026783) 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, 36013394 + 36013395.

It is an arithmetic number, because the mean of its divisors is an integer number (36013395).

Almost surely, 2^72026789 is an apocalyptic number.

It is an amenable number.

72026789 is a deficient number, since it is larger than the sum of its proper divisors (1).

72026789 is an equidigital number, since it uses as much as digits as its factorization.

72026789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 72026789 is about 8486.8597843961. The cubic root of 72026789 is about 416.0683539215.

The spelling of 72026789 in words is "seventy-two million, twenty-six thousand, seven hundred eighty-nine".