28114939 has 2 divisors, whose sum is σ = 28114940. Its totient is φ = 28114938.

The previous prime is 28114913. The next prime is 28114943. The reversal of 28114939 is 93941182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28114939 - 2⁵ = 28114907 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28114898 and 28114907.

It is not a weakly prime, because it can be changed into another prime (28114909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14057469 + 14057470.

It is an arithmetic number, because the mean of its divisors is an integer number (14057470).

Almost surely, 2^28114939 is an apocalyptic number.

28114939 is a deficient number, since it is larger than the sum of its proper divisors (1).

28114939 is an equidigital number, since it uses as much as digits as its factorization.

28114939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 37.

The square root of 28114939 is about 5302.3522138764. The cubic root of 28114939 is about 304.0738329150.

It can be divided in two parts, 2811 and 4939, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 28114939 in words is "twenty-eight million, one hundred fourteen thousand, nine hundred thirty-nine".