28622137 has 2 divisors, whose sum is σ = 28622138. Its totient is φ = 28622136.

The previous prime is 28622123. The next prime is 28622149. The reversal of 28622137 is 73122682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25563136 + 3059001 = 5056^2 + 1749^2 .

It is a cyclic number.

It is not a de Polignac number, because 28622137 - 2²³ = 20233529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28622099 and 28622108.

It is not a weakly prime, because it can be changed into another prime (28622437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14311068 + 14311069.

It is an arithmetic number, because the mean of its divisors is an integer number (14311069).

Almost surely, 2^28622137 is an apocalyptic number.

It is an amenable number.

28622137 is a deficient number, since it is larger than the sum of its proper divisors (1).

28622137 is an equidigital number, since it uses as much as digits as its factorization.

28622137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 31.

The square root of 28622137 is about 5349.9660746588. The cubic root of 28622137 is about 305.8914597888.

The spelling of 28622137 in words is "twenty-eight million, six hundred twenty-two thousand, one hundred thirty-seven".