28158622 has 8 divisors (see below), whose sum is σ = 42263496. Its totient is φ = 14070792.

The previous prime is 28158617. The next prime is 28158649. The reversal of 28158622 is 22685182.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1348 + ... + 7624.

It is an arithmetic number, because the mean of its divisors is an integer number (5282937).

Almost surely, 2^28158622 is an apocalyptic number.

28158622 is a deficient number, since it is larger than the sum of its proper divisors (14104874).

28158622 is a wasteful number, since it uses less digits than its factorization.

28158622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8522.

The product of its digits is 15360, while the sum is 34.

The square root of 28158622 is about 5306.4698246574. The cubic root of 28158622 is about 304.2312342151.

The spelling of 28158622 in words is "twenty-eight million, one hundred fifty-eight thousand, six hundred twenty-two".