28829777 has 2 divisors, whose sum is σ = 28829778. Its totient is φ = 28829776.

The previous prime is 28829767. The next prime is 28829791. The reversal of 28829777 is 77792882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28558336 + 271441 = 5344^2 + 521^2 .

It is a cyclic number.

It is not a de Polignac number, because 28829777 - 2²⁴ = 12052561 is a prime.

It is not a weakly prime, because it can be changed into another prime (28829747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14414888 + 14414889.

It is an arithmetic number, because the mean of its divisors is an integer number (14414889).

Almost surely, 2^28829777 is an apocalyptic number.

It is an amenable number.

28829777 is a deficient number, since it is larger than the sum of its proper divisors (1).

28829777 is an equidigital number, since it uses as much as digits as its factorization.

28829777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 790272, while the sum is 50.

The square root of 28829777 is about 5369.3367374379. The cubic root of 28829777 is about 306.6293772922.

The spelling of 28829777 in words is "twenty-eight million, eight hundred twenty-nine thousand, seven hundred seventy-seven".