28153907 has 2 divisors, whose sum is σ = 28153908. Its totient is φ = 28153906.

The previous prime is 28153903. The next prime is 28153913. The reversal of 28153907 is 70935182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28153907 - 2² = 28153903 is a prime.

It is not a weakly prime, because it can be changed into another prime (28153901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14076953 + 14076954.

It is an arithmetic number, because the mean of its divisors is an integer number (14076954).

Almost surely, 2^28153907 is an apocalyptic number.

28153907 is a deficient number, since it is larger than the sum of its proper divisors (1).

28153907 is an equidigital number, since it uses as much as digits as its factorization.

28153907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 28153907 is about 5306.0255370663. The cubic root of 28153907 is about 304.2142526746.

The spelling of 28153907 in words is "twenty-eight million, one hundred fifty-three thousand, nine hundred seven".