28062649 has 2 divisors, whose sum is σ = 28062650. Its totient is φ = 28062648.

The previous prime is 28062607. The next prime is 28062653. The reversal of 28062649 is 94626082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17073424 + 10989225 = 4132^2 + 3315^2 .

It is a cyclic number.

It is not a de Polignac number, because 28062649 - 2²¹ = 25965497 is a prime.

It is not a weakly prime, because it can be changed into another prime (28062049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14031324 + 14031325.

It is an arithmetic number, because the mean of its divisors is an integer number (14031325).

Almost surely, 2^28062649 is an apocalyptic number.

It is an amenable number.

28062649 is a deficient number, since it is larger than the sum of its proper divisors (1).

28062649 is an equidigital number, since it uses as much as digits as its factorization.

28062649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 28062649 is about 5297.4190885751. The cubic root of 28062649 is about 303.8852037996.

The spelling of 28062649 in words is "twenty-eight million, sixty-two thousand, six hundred forty-nine".