28829057 has 2 divisors, whose sum is σ = 28829058. Its totient is φ = 28829056.

The previous prime is 28829033. The next prime is 28829063. The reversal of 28829057 is 75092882.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18011536 + 10817521 = 4244^2 + 3289^2 .

It is a cyclic number.

It is not a de Polignac number, because 28829057 - 2⁸ = 28828801 is a prime.

It is a super-2 number, since 2×28829057² = 1662229055018498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28829077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14414528 + 14414529.

It is an arithmetic number, because the mean of its divisors is an integer number (14414529).

Almost surely, 2^28829057 is an apocalyptic number.

It is an amenable number.

28829057 is a deficient number, since it is larger than the sum of its proper divisors (1).

28829057 is an equidigital number, since it uses as much as digits as its factorization.

28829057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 28829057 is about 5369.2696896319. The cubic root of 28829057 is about 306.6268246654.

The spelling of 28829057 in words is "twenty-eight million, eight hundred twenty-nine thousand, fifty-seven".