28462081 has 4 divisors (see below), whose sum is σ = 28472752. Its totient is φ = 28451412.

The previous prime is 28462073. The next prime is 28462117. The reversal of 28462081 is 18026482.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28462081 - 2³ = 28462073 is a prime.

It is a super-3 number, since 3×28462081³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28462381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2650 + ... + 7996.

It is an arithmetic number, because the mean of its divisors is an integer number (7118188).

Almost surely, 2^28462081 is an apocalyptic number.

It is an amenable number.

28462081 is a deficient number, since it is larger than the sum of its proper divisors (10671).

28462081 is an equidigital number, since it uses as much as digits as its factorization.

28462081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10670.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 28462081 is about 5334.9865042004. The cubic root of 28462081 is about 305.3202083637.

The spelling of 28462081 in words is "twenty-eight million, four hundred sixty-two thousand, eighty-one".