28937773 has 2 divisors, whose sum is σ = 28937774. Its totient is φ = 28937772.

The previous prime is 28937767. The next prime is 28937801. The reversal of 28937773 is 37773982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28869129 + 68644 = 5373^2 + 262^2 .

It is a cyclic number.

It is not a de Polignac number, because 28937773 - 2⁹ = 28937261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28935773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14468886 + 14468887.

It is an arithmetic number, because the mean of its divisors is an integer number (14468887).

Almost surely, 2^28937773 is an apocalyptic number.

It is an amenable number.

28937773 is a deficient number, since it is larger than the sum of its proper divisors (1).

28937773 is an equidigital number, since it uses as much as digits as its factorization.

28937773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 444528, while the sum is 46.

The square root of 28937773 is about 5379.3840725496. The cubic root of 28937773 is about 307.0117768615.

The spelling of 28937773 in words is "twenty-eight million, nine hundred thirty-seven thousand, seven hundred seventy-three".