72276823 has 2 divisors, whose sum is σ = 72276824. Its totient is φ = 72276822.

The previous prime is 72276797. The next prime is 72276839. The reversal of 72276823 is 32867227.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72276823 - 2⁵ = 72276791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72276023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36138411 + 36138412.

It is an arithmetic number, because the mean of its divisors is an integer number (36138412).

Almost surely, 2^72276823 is an apocalyptic number.

72276823 is a deficient number, since it is larger than the sum of its proper divisors (1).

72276823 is an equidigital number, since it uses as much as digits as its factorization.

72276823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 37.

The square root of 72276823 is about 8501.5776771138. The cubic root of 72276823 is about 416.5492448500.

The spelling of 72276823 in words is "seventy-two million, two hundred seventy-six thousand, eight hundred twenty-three".