28902617 has 2 divisors, whose sum is σ = 28902618. Its totient is φ = 28902616.

The previous prime is 28902611. The next prime is 28902619. The reversal of 28902617 is 71620982.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19193161 + 9709456 = 4381^2 + 3116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28902617 is a prime.

It is a super-2 number, since 2×28902617² = 1670722538897378, which contains 22 as substring.

Together with 28902619, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28902611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14451308 + 14451309.

It is an arithmetic number, because the mean of its divisors is an integer number (14451309).

Almost surely, 2^28902617 is an apocalyptic number.

It is an amenable number.

28902617 is a deficient number, since it is larger than the sum of its proper divisors (1).

28902617 is an equidigital number, since it uses as much as digits as its factorization.

28902617 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 28902617 is about 5376.1154191479. The cubic root of 28902617 is about 306.8873987134.

The spelling of 28902617 in words is "twenty-eight million, nine hundred two thousand, six hundred seventeen".