28746697429 has 2 divisors, whose sum is σ = 28746697430. Its totient is φ = 28746697428.

The previous prime is 28746697423. The next prime is 28746697477. The reversal of 28746697429 is 92479664782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16894020529 + 11852676900 = 129977^2 + 108870^2 .

It is a cyclic number.

It is not a de Polignac number, because 28746697429 - 2²⁹ = 28209826517 is a prime.

It is a super-2 number, since 2×28746697429² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28746697423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14373348714 + 14373348715.

It is an arithmetic number, because the mean of its divisors is an integer number (14373348715).

Almost surely, 2^28746697429 is an apocalyptic number.

It is an amenable number.

28746697429 is a deficient number, since it is larger than the sum of its proper divisors (1).

28746697429 is an equidigital number, since it uses as much as digits as its factorization.

28746697429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73156608, while the sum is 64.

The spelling of 28746697429 in words is "twenty-eight billion, seven hundred forty-six million, six hundred ninety-seven thousand, four hundred twenty-nine".