28486081 has 16 divisors (see below), whose sum is σ = 31711680. Its totient is φ = 25421760.

The previous prime is 28486079. The next prime is 28486097. The reversal of 28486081 is 18068482.

It is not a de Polignac number, because 28486081 - 2¹ = 28486079 is a prime.

It is a super-2 number, since 2×28486081² = 1622913621477122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28486081.

It is not an unprimeable number, because it can be changed into a prime (28486001) 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, 73035 + ... + 73423.

It is an arithmetic number, because the mean of its divisors is an integer number (1981980).

Almost surely, 2^28486081 is an apocalyptic number.

It is an amenable number.

28486081 is a deficient number, since it is larger than the sum of its proper divisors (3225599).

28486081 is a wasteful number, since it uses less digits than its factorization.

28486081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576.

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 28486081 is about 5337.2353330165. The cubic root of 28486081 is about 305.4060023520.

The spelling of 28486081 in words is "twenty-eight million, four hundred eighty-six thousand, eighty-one".