28077422 has 8 divisors (see below), whose sum is σ = 42744936. Its totient is φ = 13829112.

The previous prime is 28077389. The next prime is 28077431. The reversal of 28077422 is 22477082.

It is a happy number.

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, 104633 + ... + 104900.

It is an arithmetic number, because the mean of its divisors is an integer number (5343117).

Almost surely, 2^28077422 is an apocalyptic number.

28077422 is a deficient number, since it is larger than the sum of its proper divisors (14667514).

28077422 is a wasteful number, since it uses less digits than its factorization.

28077422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209602.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 28077422 is about 5298.8132633638. The cubic root of 28077422 is about 303.9385191344.

The spelling of 28077422 in words is "twenty-eight million, seventy-seven thousand, four hundred twenty-two".