28867477 has 2 divisors, whose sum is σ = 28867478. Its totient is φ = 28867476.

The previous prime is 28867471. The next prime is 28867493. The reversal of 28867477 is 77476882.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26946481 + 1920996 = 5191^2 + 1386^2 .

It is a cyclic number.

It is not a de Polignac number, because 28867477 - 2²³ = 20478869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28867477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28867471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14433738 + 14433739.

It is an arithmetic number, because the mean of its divisors is an integer number (14433739).

Almost surely, 2^28867477 is an apocalyptic number.

It is an amenable number.

28867477 is a deficient number, since it is larger than the sum of its proper divisors (1).

28867477 is an equidigital number, since it uses as much as digits as its factorization.

28867477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1053696, while the sum is 49.

The square root of 28867477 is about 5372.8462661796. The cubic root of 28867477 is about 306.7629763405.

The spelling of 28867477 in words is "twenty-eight million, eight hundred sixty-seven thousand, four hundred seventy-seven".