28857498 has 8 divisors (see below), whose sum is σ = 57715008. Its totient is φ = 9619164.

The previous prime is 28857487. The next prime is 28857509. The reversal of 28857498 is 89475882.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28857487) and next prime (28857509).

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

28857498 is an admirable number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28857498.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2404786 + ... + 2404797.

It is an arithmetic number, because the mean of its divisors is an integer number (7214376).

Almost surely, 2^28857498 is an apocalyptic number.

28857498 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28857498 is a wasteful number, since it uses less digits than its factorization.

28857498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4809588.

The product of its digits is 1290240, while the sum is 51.

The square root of 28857498 is about 5371.9175347356. The cubic root of 28857498 is about 306.7276246707.

The spelling of 28857498 in words is "twenty-eight million, eight hundred fifty-seven thousand, four hundred ninety-eight".