28572407 has 2 divisors, whose sum is σ = 28572408. Its totient is φ = 28572406.

The previous prime is 28572403. The next prime is 28572413. The reversal of 28572407 is 70427582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28572407 - 2² = 28572403 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28572403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14286203 + 14286204.

It is an arithmetic number, because the mean of its divisors is an integer number (14286204).

Almost surely, 2^28572407 is an apocalyptic number.

28572407 is a deficient number, since it is larger than the sum of its proper divisors (1).

28572407 is an equidigital number, since it uses as much as digits as its factorization.

28572407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 28572407 is about 5345.3163610772. The cubic root of 28572407 is about 305.7141983808.

Adding to 28572407 its reverse (70427582), we get a palindrome (98999989).

The spelling of 28572407 in words is "twenty-eight million, five hundred seventy-two thousand, four hundred seven".