28380707 has 2 divisors, whose sum is σ = 28380708. Its totient is φ = 28380706.

The previous prime is 28380673. The next prime is 28380713. The reversal of 28380707 is 70708382.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28380707 - 2¹⁶ = 28315171 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28380727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14190353 + 14190354.

It is an arithmetic number, because the mean of its divisors is an integer number (14190354).

Almost surely, 2^28380707 is an apocalyptic number.

28380707 is a deficient number, since it is larger than the sum of its proper divisors (1).

28380707 is an equidigital number, since it uses as much as digits as its factorization.

28380707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 28380707 is about 5327.3545967957. The cubic root of 28380707 is about 305.0289572077.

The spelling of 28380707 in words is "twenty-eight million, three hundred eighty thousand, seven hundred seven".