28859737 has 2 divisors, whose sum is σ = 28859738. Its totient is φ = 28859736.

The previous prime is 28859723. The next prime is 28859749. The reversal of 28859737 is 73795882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28558336 + 301401 = 5344^2 + 549^2 .

It is a cyclic number.

It is not a de Polignac number, because 28859737 - 2⁷ = 28859609 is a prime.

It is not a weakly prime, because it can be changed into another prime (28859717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14429868 + 14429869.

It is an arithmetic number, because the mean of its divisors is an integer number (14429869).

Almost surely, 2^28859737 is an apocalyptic number.

It is an amenable number.

28859737 is a deficient number, since it is larger than the sum of its proper divisors (1).

28859737 is an equidigital number, since it uses as much as digits as its factorization.

28859737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 49.

The square root of 28859737 is about 5372.1259292760. The cubic root of 28859737 is about 306.7355572756.

It can be divided in two parts, 288 and 59737, that added together give a square (60025 = 245²).

The spelling of 28859737 in words is "twenty-eight million, eight hundred fifty-nine thousand, seven hundred thirty-seven".