72428611 has 2 divisors, whose sum is σ = 72428612. Its totient is φ = 72428610.

The previous prime is 72428599. The next prime is 72428623. The reversal of 72428611 is 11682427.

It is a balanced prime because it is at equal distance from previous prime (72428599) and next prime (72428623).

It is a cyclic number.

It is not a de Polignac number, because 72428611 - 2¹⁹ = 71904323 is a prime.

It is a Chen prime.

It is the 8511-st Hogben number.

It is not a weakly prime, because it can be changed into another prime (72428011) by changing a digit.

It is a nontrivial repunit in base 8510.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36214305 + 36214306.

It is an arithmetic number, because the mean of its divisors is an integer number (36214306).

Almost surely, 2^72428611 is an apocalyptic number.

72428611 is a deficient number, since it is larger than the sum of its proper divisors (1).

72428611 is an equidigital number, since it uses as much as digits as its factorization.

72428611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 31.

The square root of 72428611 is about 8510.5000440632. The cubic root of 72428611 is about 416.8406382490.

The spelling of 72428611 in words is "seventy-two million, four hundred twenty-eight thousand, six hundred eleven".