4028723 has 2 divisors, whose sum is σ = 4028724. Its totient is φ = 4028722.

The previous prime is 4028707. The next prime is 4028743. The reversal of 4028723 is 3278204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4028723 - 2⁴ = 4028707 is a prime.

It is an Ulam number.

It is equal to p₂₈₅₀₄₇ and since 4028723 and 285047 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 4028692 and 4028701.

It is not a weakly prime, because it can be changed into another prime (4028743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2014361 + 2014362.

It is an arithmetic number, because the mean of its divisors is an integer number (2014362).

Almost surely, 2^4028723 is an apocalyptic number.

4028723 is a deficient number, since it is larger than the sum of its proper divisors (1).

4028723 is an equidigital number, since it uses as much as digits as its factorization.

4028723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 4028723 is about 2007.1679052835. The cubic root of 4028723 is about 159.1191570174.

The spelling of 4028723 in words is "four million, twenty-eight thousand, seven hundred twenty-three".