28353081 has 8 divisors (see below), whose sum is σ = 38076640. Its totient is φ = 18765792.

The previous prime is 28353077. The next prime is 28353151. The reversal of 28353081 is 18035382.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28353081 - 2² = 28353077 is a prime.

It is a super-2 number, since 2×28353081² = 1607794404385122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28353041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33580 + ... + 34413.

It is an arithmetic number, because the mean of its divisors is an integer number (4759580).

Almost surely, 2^28353081 is an apocalyptic number.

It is an amenable number.

28353081 is a deficient number, since it is larger than the sum of its proper divisors (9723559).

28353081 is a wasteful number, since it uses less digits than its factorization.

28353081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68135.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 28353081 is about 5324.7611214025. The cubic root of 28353081 is about 304.9299525603.

The spelling of 28353081 in words is "twenty-eight million, three hundred fifty-three thousand, eighty-one".