28654657 has 2 divisors, whose sum is σ = 28654658. Its totient is φ = 28654656.

The previous prime is 28654601. The next prime is 28654663. The reversal of 28654657 is 75645682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15397776 + 13256881 = 3924^2 + 3641^2 .

It is a cyclic number.

It is not a de Polignac number, because 28654657 - 2¹⁵ = 28621889 is a prime.

It is not a weakly prime, because it can be changed into another prime (28654957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14327328 + 14327329.

It is an arithmetic number, because the mean of its divisors is an integer number (14327329).

Almost surely, 2^28654657 is an apocalyptic number.

It is an amenable number.

28654657 is a deficient number, since it is larger than the sum of its proper divisors (1).

28654657 is an equidigital number, since it uses as much as digits as its factorization.

28654657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 43.

The square root of 28654657 is about 5353.0044834653. The cubic root of 28654657 is about 306.0072655515.

Subtracting 28654657 from its reverse (75645682), we obtain a square (46991025 = 6855²).

The spelling of 28654657 in words is "twenty-eight million, six hundred fifty-four thousand, six hundred fifty-seven".