28623622 has 4 divisors (see below), whose sum is σ = 42935436. Its totient is φ = 14311810.

The previous prime is 28623601. The next prime is 28623643. The reversal of 28623622 is 22632682.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (28623601) and next prime (28623643).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7155904 + ... + 7155907.

It is an arithmetic number, because the mean of its divisors is an integer number (10733859).

Almost surely, 2^28623622 is an apocalyptic number.

28623622 is a deficient number, since it is larger than the sum of its proper divisors (14311814).

28623622 is a wasteful number, since it uses less digits than its factorization.

28623622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14311813.

The product of its digits is 13824, while the sum is 31.

The square root of 28623622 is about 5350.1048587855. The cubic root of 28623622 is about 305.8967498778.

The spelling of 28623622 in words is "twenty-eight million, six hundred twenty-three thousand, six hundred twenty-two".