28770420023 has 2 divisors, whose sum is σ = 28770420024. Its totient is φ = 28770420022.

The previous prime is 28770419971. The next prime is 28770420047. The reversal of 28770420023 is 32002407782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28770420023 - 2²⁴ = 28753642807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28770420073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14385210011 + 14385210012.

It is an arithmetic number, because the mean of its divisors is an integer number (14385210012).

Almost surely, 2^28770420023 is an apocalyptic number.

28770420023 is a deficient number, since it is larger than the sum of its proper divisors (1).

28770420023 is an equidigital number, since it uses as much as digits as its factorization.

28770420023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 35.

The spelling of 28770420023 in words is "twenty-eight billion, seven hundred seventy million, four hundred twenty thousand, twenty-three".