28022554 has 8 divisors (see below), whose sum is σ = 48038688. Its totient is φ = 12009660.

The previous prime is 28022521. The next prime is 28022563. The reversal of 28022554 is 45522082.

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

It is a super-3 number, since 3×28022554³ (a number of 23 digits) contains 333 as substring.

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, 1000792 + ... + 1000819.

It is an arithmetic number, because the mean of its divisors is an integer number (6004836).

Almost surely, 2^28022554 is an apocalyptic number.

28022554 is a deficient number, since it is larger than the sum of its proper divisors (20016134).

28022554 is a wasteful number, since it uses less digits than its factorization.

28022554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001620.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 28022554 is about 5293.6333458221. The cubic root of 28022554 is about 303.7404077198.

It can be divided in two parts, 2802 and 2554, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 28022554 in words is "twenty-eight million, twenty-two thousand, five hundred fifty-four".