28621282 has 8 divisors (see below), whose sum is σ = 42959952. Its totient is φ = 14301300.

The previous prime is 28621267. The next prime is 28621283. The reversal of 28621282 is 28212682.

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

It is not an unprimeable number, because it can be changed into a prime (28621283) 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, 157 + ... + 7567.

It is an arithmetic number, because the mean of its divisors is an integer number (5369994).

Almost surely, 2^28621282 is an apocalyptic number.

28621282 is a deficient number, since it is larger than the sum of its proper divisors (14338670).

28621282 is a wasteful number, since it uses less digits than its factorization.

28621282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9344.

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

The square root of 28621282 is about 5349.8861670133. The cubic root of 28621282 is about 305.8884138969. Note that the first 3 decimals are identical.

The spelling of 28621282 in words is "twenty-eight million, six hundred twenty-one thousand, two hundred eighty-two".