28846557 has 16 divisors (see below), whose sum is σ = 42840000. Its totient is φ = 19184112.

The previous prime is 28846553. The next prime is 28846621. The reversal of 28846557 is 75564882.

It is not a de Polignac number, because 28846557 - 2² = 28846553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28846553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12694 + ... + 14792.

It is an arithmetic number, because the mean of its divisors is an integer number (2677500).

Almost surely, 2^28846557 is an apocalyptic number.

28846557 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28846557 is a deficient number, since it is larger than the sum of its proper divisors (13993443).

28846557 is a wasteful number, since it uses less digits than its factorization.

28846557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2617 (or 2611 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 28846557 is about 5370.8990867452. The cubic root of 28846557 is about 306.6888556461.

It can be divided in two parts, 28846 and 557, that added together give a triangular number (29403 = T₂₄₂).

The spelling of 28846557 in words is "twenty-eight million, eight hundred forty-six thousand, five hundred fifty-seven".