28752937 has 2 divisors, whose sum is σ = 28752938. Its totient is φ = 28752936.

The previous prime is 28752929. The next prime is 28752953. The reversal of 28752937 is 73925782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22382361 + 6370576 = 4731^2 + 2524^2 .

It is a cyclic number.

It is not a de Polignac number, because 28752937 - 2³ = 28752929 is a prime.

It is a super-2 number, since 2×28752937² = 1653462772251938, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28752893 and 28752902.

It is not a weakly prime, because it can be changed into another prime (28752907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14376468 + 14376469.

It is an arithmetic number, because the mean of its divisors is an integer number (14376469).

Almost surely, 2^28752937 is an apocalyptic number.

It is an amenable number.

28752937 is a deficient number, since it is larger than the sum of its proper divisors (1).

28752937 is an equidigital number, since it uses as much as digits as its factorization.

28752937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The square root of 28752937 is about 5362.1765170498. The cubic root of 28752937 is about 306.3567151631.

The spelling of 28752937 in words is "twenty-eight million, seven hundred fifty-two thousand, nine hundred thirty-seven".