28297058 has 8 divisors (see below), whose sum is σ = 42479580. Its totient is φ = 14137200.

The previous prime is 28297057. The next prime is 28297067. The reversal of 28297058 is 85079282.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28270489 + 26569 = 5317^2 + 163^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28297057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2093 + ... + 7808.

Almost surely, 2^28297058 is an apocalyptic number.

28297058 is a deficient number, since it is larger than the sum of its proper divisors (14182522).

28297058 is a wasteful number, since it uses less digits than its factorization.

28297058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11332.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 28297058 is about 5319.4979086376. The cubic root of 28297058 is about 304.7289825773.

The spelling of 28297058 in words is "twenty-eight million, two hundred ninety-seven thousand, fifty-eight".