28712963 has 2 divisors, whose sum is σ = 28712964. Its totient is φ = 28712962.

The previous prime is 28712953. The next prime is 28712969. The reversal of 28712963 is 36921782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28712963 - 2¹⁶ = 28647427 is a prime.

It is a super-3 number, since 3×28712963³ (a number of 23 digits) contains 333 as substring.

It is equal to p_1782992 and since 28712963 and 1782992 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (28712969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14356481 + 14356482.

It is an arithmetic number, because the mean of its divisors is an integer number (14356482).

Almost surely, 2^28712963 is an apocalyptic number.

28712963 is a deficient number, since it is larger than the sum of its proper divisors (1).

28712963 is an equidigital number, since it uses as much as digits as its factorization.

28712963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 28712963 is about 5358.4478162990. The cubic root of 28712963 is about 306.2146776976.

The spelling of 28712963 in words is "twenty-eight million, seven hundred twelve thousand, nine hundred sixty-three".