28452031 has 2 divisors, whose sum is σ = 28452032. Its totient is φ = 28452030.

The previous prime is 28452007. The next prime is 28452037. The reversal of 28452031 is 13025482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28452031 - 2⁷ = 28451903 is a prime.

It is a super-2 number, since 2×28452031² = 1619036136049922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28451987 and 28452005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28452037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14226015 + 14226016.

It is an arithmetic number, because the mean of its divisors is an integer number (14226016).

Almost surely, 2^28452031 is an apocalyptic number.

28452031 is a deficient number, since it is larger than the sum of its proper divisors (1).

28452031 is an equidigital number, since it uses as much as digits as its factorization.

28452031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 28452031 is about 5334.0445254985. The cubic root of 28452031 is about 305.2842678045.

The spelling of 28452031 in words is "twenty-eight million, four hundred fifty-two thousand, thirty-one".