28147361 has 16 divisors (see below), whose sum is σ = 31752000. Its totient is φ = 24729600.

The previous prime is 28147351. The next prime is 28147367. The reversal of 28147361 is 16374182.

28147361 is nontrivially palindromic in base 7.

It is a cyclic number.

It is not a de Polignac number, because 28147361 - 2⁶ = 28147297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28147367) 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, 62465 + ... + 62913.

It is an arithmetic number, because the mean of its divisors is an integer number (1984500).

Almost surely, 2^28147361 is an apocalyptic number.

It is an amenable number.

28147361 is a deficient number, since it is larger than the sum of its proper divisors (3604639).

28147361 is a wasteful number, since it uses less digits than its factorization.

28147361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640.

The product of its digits is 8064, while the sum is 32.

The square root of 28147361 is about 5305.4086553252. The cubic root of 28147361 is about 304.1906734622.

The spelling of 28147361 in words is "twenty-eight million, one hundred forty-seven thousand, three hundred sixty-one".