28480957 has 2 divisors, whose sum is σ = 28480958. Its totient is φ = 28480956.

The previous prime is 28480951. The next prime is 28480973. The reversal of 28480957 is 75908482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25190361 + 3290596 = 5019^2 + 1814^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28480957 is a prime.

It is a super-2 number, since 2×28480957² = 1622329823271698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28480951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14240478 + 14240479.

It is an arithmetic number, because the mean of its divisors is an integer number (14240479).

Almost surely, 2^28480957 is an apocalyptic number.

It is an amenable number.

28480957 is a deficient number, since it is larger than the sum of its proper divisors (1).

28480957 is an equidigital number, since it uses as much as digits as its factorization.

28480957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 28480957 is about 5336.7552876256. The cubic root of 28480957 is about 305.3876893825.

The spelling of 28480957 in words is "twenty-eight million, four hundred eighty thousand, nine hundred fifty-seven".