28641322 has 8 divisors (see below), whose sum is σ = 45223200. Its totient is φ = 13566924.

The previous prime is 28641281. The next prime is 28641343. The reversal of 28641322 is 22314682.

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

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, 376822 + ... + 376897.

It is an arithmetic number, because the mean of its divisors is an integer number (5652900).

Almost surely, 2^28641322 is an apocalyptic number.

28641322 is a deficient number, since it is larger than the sum of its proper divisors (16581878).

28641322 is a wasteful number, since it uses less digits than its factorization.

28641322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753740.

The product of its digits is 4608, while the sum is 28.

The square root of 28641322 is about 5351.7587763276. The cubic root of 28641322 is about 305.9597893821.

It can be divided in two parts, 2864 and 1322, that added together give a triangular number (4186 = T₉₁).

The spelling of 28641322 in words is "twenty-eight million, six hundred forty-one thousand, three hundred twenty-two".