28492949 has 2 divisors, whose sum is σ = 28492950. Its totient is φ = 28492948.

The previous prime is 28492943. The next prime is 28492957. The reversal of 28492949 is 94929482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26112100 + 2380849 = 5110^2 + 1543^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28492949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28492943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14246474 + 14246475.

It is an arithmetic number, because the mean of its divisors is an integer number (14246475).

Almost surely, 2^28492949 is an apocalyptic number.

It is an amenable number.

28492949 is a deficient number, since it is larger than the sum of its proper divisors (1).

28492949 is an equidigital number, since it uses as much as digits as its factorization.

28492949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 47.

The square root of 28492949 is about 5337.8786985094. The cubic root of 28492949 is about 305.4305448631.

The spelling of 28492949 in words is "twenty-eight million, four hundred ninety-two thousand, nine hundred forty-nine".