28729601 has 2 divisors, whose sum is σ = 28729602. Its totient is φ = 28729600.

The previous prime is 28729583. The next prime is 28729619. The reversal of 28729601 is 10692782.

It is a happy number.

It is a Cunningham number, because it is equal to 5360²+1.

It is a balanced prime because it is at equal distance from previous prime (28729583) and next prime (28729619).

It can be written as a sum of positive squares in only one way, i.e., 28729600 + 1 = 5360^2 + 1^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28729601 is a prime.

It is not a weakly prime, because it can be changed into another prime (28729621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14364800 + 14364801.

It is an arithmetic number, because the mean of its divisors is an integer number (14364801).

Almost surely, 2^28729601 is an apocalyptic number.

It is an amenable number.

28729601 is a deficient number, since it is larger than the sum of its proper divisors (1).

28729601 is an equidigital number, since it uses as much as digits as its factorization.

28729601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 28729601 is about 5360.0000932836. Note that the first 4 decimals coincide. The cubic root of 28729601 is about 306.2738126146.

The spelling of 28729601 in words is "twenty-eight million, seven hundred twenty-nine thousand, six hundred one".