28661041 has 8 divisors (see below), whose sum is σ = 29240064. Its totient is φ = 28087200.

The previous prime is 28661029. The next prime is 28661053. The reversal of 28661041 is 14016682.

It is an interprime number because it is at equal distance from previous prime (28661029) and next prime (28661053).

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 28661041 - 2¹⁵ = 28628273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28661011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11016 + ... + 13366.

It is an arithmetic number, because the mean of its divisors is an integer number (3655008).

Almost surely, 2^28661041 is an apocalyptic number.

It is an amenable number.

28661041 is a deficient number, since it is larger than the sum of its proper divisors (579023).

28661041 is a wasteful number, since it uses less digits than its factorization.

28661041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2591.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 28661041 is about 5353.6007508965. The cubic root of 28661041 is about 306.0299890867.

The spelling of 28661041 in words is "twenty-eight million, six hundred sixty-one thousand, forty-one".