28635161 has 8 divisors (see below), whose sum is σ = 29955840. Its totient is φ = 27320832.

The previous prime is 28635137. The next prime is 28635283. The reversal of 28635161 is 16153682.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28635161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28635461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9305 + ... + 11993.

It is an arithmetic number, because the mean of its divisors is an integer number (3744480).

Almost surely, 2^28635161 is an apocalyptic number.

It is an amenable number.

28635161 is a deficient number, since it is larger than the sum of its proper divisors (1320679).

28635161 is a wasteful number, since it uses less digits than its factorization.

28635161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3175.

The product of its digits is 8640, while the sum is 32.

The square root of 28635161 is about 5351.1831402037. The cubic root of 28635161 is about 305.9378495960.

The spelling of 28635161 in words is "twenty-eight million, six hundred thirty-five thousand, one hundred sixty-one".