28557395 has 8 divisors (see below), whose sum is σ = 34682256. Its totient is φ = 22570336.

The previous prime is 28557391. The next prime is 28557427. The reversal of 28557395 is 59375582.

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

It is a cyclic number.

It is not a de Polignac number, because 28557395 - 2² = 28557391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28557391) 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, 33992 + ... + 34821.

It is an arithmetic number, because the mean of its divisors is an integer number (4335282).

Almost surely, 2^28557395 is an apocalyptic number.

28557395 is a deficient number, since it is larger than the sum of its proper divisors (6124861).

28557395 is an equidigital number, since it uses as much as digits as its factorization.

28557395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68901.

The product of its digits is 378000, while the sum is 44.

The square root of 28557395 is about 5343.9119566101. The cubic root of 28557395 is about 305.6606480500.

The spelling of 28557395 in words is "twenty-eight million, five hundred fifty-seven thousand, three hundred ninety-five".