28097458 has 4 divisors (see below), whose sum is σ = 42146190. Its totient is φ = 14048728.

The previous prime is 28097453. The next prime is 28097479. The reversal of 28097458 is 85479082.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14311089 + 13786369 = 3783^2 + 3713^2 .

It is not an unprimeable number, because it can be changed into a prime (28097453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7024363 + ... + 7024366.

Almost surely, 2^28097458 is an apocalyptic number.

28097458 is a deficient number, since it is larger than the sum of its proper divisors (14048732).

28097458 is a wasteful number, since it uses less digits than its factorization.

28097458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14048731.

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

The square root of 28097458 is about 5300.7035382108. The cubic root of 28097458 is about 304.0107986123.

The spelling of 28097458 in words is "twenty-eight million, ninety-seven thousand, four hundred fifty-eight".