28307622 has 16 divisors (see below), whose sum is σ = 64703232. Its totient is φ = 8087880.

The previous prime is 28307621. The next prime is 28307633. The reversal of 28307622 is 22670382.

It is a self number, because there is not a number n which added to its sum of digits gives 28307622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28307621) 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, 336954 + ... + 337037.

It is an arithmetic number, because the mean of its divisors is an integer number (4043952).

Almost surely, 2^28307622 is an apocalyptic number.

28307622 is an abundant number, since it is smaller than the sum of its proper divisors (36395610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28307622 is a wasteful number, since it uses less digits than its factorization.

28307622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674003.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 28307622 is about 5320.4907668372. The cubic root of 28307622 is about 304.7668988447.

The spelling of 28307622 in words is "twenty-eight million, three hundred seven thousand, six hundred twenty-two".