28461737 has 2 divisors, whose sum is σ = 28461738. Its totient is φ = 28461736.

The previous prime is 28461733. The next prime is 28461761. The reversal of 28461737 is 73716482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18826921 + 9634816 = 4339^2 + 3104^2 .

It is a cyclic number.

It is not a de Polignac number, because 28461737 - 2² = 28461733 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28461737.

It is not a weakly prime, because it can be changed into another prime (28461733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14230868 + 14230869.

It is an arithmetic number, because the mean of its divisors is an integer number (14230869).

Almost surely, 2^28461737 is an apocalyptic number.

It is an amenable number.

28461737 is a deficient number, since it is larger than the sum of its proper divisors (1).

28461737 is an equidigital number, since it uses as much as digits as its factorization.

28461737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 38.

The square root of 28461737 is about 5334.9542640964. The cubic root of 28461737 is about 305.3189782994.

The spelling of 28461737 in words is "twenty-eight million, four hundred sixty-one thousand, seven hundred thirty-seven".