28554947 has 2 divisors, whose sum is σ = 28554948. Its totient is φ = 28554946.

The previous prime is 28554943. The next prime is 28554949. The reversal of 28554947 is 74945582.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28554947 - 2² = 28554943 is a prime.

Together with 28554949, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28554898 and 28554907.

It is not a weakly prime, because it can be changed into another prime (28554941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14277473 + 14277474.

It is an arithmetic number, because the mean of its divisors is an integer number (14277474).

Almost surely, 2^28554947 is an apocalyptic number.

28554947 is a deficient number, since it is larger than the sum of its proper divisors (1).

28554947 is an equidigital number, since it uses as much as digits as its factorization.

28554947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 44.

The square root of 28554947 is about 5343.6829060115. The cubic root of 28554947 is about 305.6519138424.

The spelling of 28554947 in words is "twenty-eight million, five hundred fifty-four thousand, nine hundred forty-seven".