28258401 has 8 divisors (see below), whose sum is σ = 37710400. Its totient is φ = 18822672.

The previous prime is 28258387. The next prime is 28258409. The reversal of 28258401 is 10485282.

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

It is not a de Polignac number, because 28258401 - 2¹⁰ = 28257377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28258409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 831 + ... + 7563.

It is an arithmetic number, because the mean of its divisors is an integer number (4713800).

Almost surely, 2^28258401 is an apocalyptic number.

It is an amenable number.

28258401 is a deficient number, since it is larger than the sum of its proper divisors (9451999).

28258401 is a wasteful number, since it uses less digits than its factorization.

28258401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8135.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 28258401 is about 5315.8631472227. The cubic root of 28258401 is about 304.5901545221.

The spelling of 28258401 in words is "twenty-eight million, two hundred fifty-eight thousand, four hundred one".