28556601 has 32 divisors (see below), whose sum is σ = 41902080. Its totient is φ = 17236800.

The previous prime is 28556599. The next prime is 28556603. The reversal of 28556601 is 10665582.

It is an interprime number because it is at equal distance from previous prime (28556599) and next prime (28556603).

It is not a de Polignac number, because 28556601 - 2¹ = 28556599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28556603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149416 + ... + 149606.

It is an arithmetic number, because the mean of its divisors is an integer number (1309440).

Almost surely, 2^28556601 is an apocalyptic number.

It is an amenable number.

28556601 is a deficient number, since it is larger than the sum of its proper divisors (13345479).

28556601 is a wasteful number, since it uses less digits than its factorization.

28556601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 28556601 is about 5343.8376659476. The cubic root of 28556601 is about 305.6578151959.

The spelling of 28556601 in words is "twenty-eight million, five hundred fifty-six thousand, six hundred one".