28630463 has 2 divisors, whose sum is σ = 28630464. Its totient is φ = 28630462.

The previous prime is 28630457. The next prime is 28630487. The reversal of 28630463 is 36403682.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28630463 is a prime.

It is equal to p_1778225 and since 28630463 and 1778225 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28632463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14315231 + 14315232.

It is an arithmetic number, because the mean of its divisors is an integer number (14315232).

Almost surely, 2^28630463 is an apocalyptic number.

28630463 is a deficient number, since it is larger than the sum of its proper divisors (1).

28630463 is an equidigital number, since it uses as much as digits as its factorization.

28630463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 28630463 is about 5350.7441538537. The cubic root of 28630463 is about 305.9211175484.

The spelling of 28630463 in words is "twenty-eight million, six hundred thirty thousand, four hundred sixty-three".