28216334 has 8 divisors (see below), whose sum is σ = 42475968. Its totient is φ = 14057680.

The previous prime is 28216303. The next prime is 28216339. The reversal of 28216334 is 43361282.

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

It is a junction number, because it is equal to n+sod(n) for n = 28216297 and 28216306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28216339) 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, 24542 + ... + 25665.

It is an arithmetic number, because the mean of its divisors is an integer number (5309496).

Almost surely, 2^28216334 is an apocalyptic number.

28216334 is a deficient number, since it is larger than the sum of its proper divisors (14259634).

28216334 is a wasteful number, since it uses less digits than its factorization.

28216334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50490.

The product of its digits is 6912, while the sum is 29.

The square root of 28216334 is about 5311.9049313782. The cubic root of 28216334 is about 304.4389362769.

The spelling of 28216334 in words is "twenty-eight million, two hundred sixteen thousand, three hundred thirty-four".