28551344 has 10 divisors (see below), whose sum is σ = 55318260. Its totient is φ = 14275664.

The previous prime is 28551343. The next prime is 28551353. The reversal of 28551344 is 44315582.

It is a self number, because there is not a number n which added to its sum of digits gives 28551344.

It is not an unprimeable number, because it can be changed into a prime (28551343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 892214 + ... + 892245.

It is an arithmetic number, because the mean of its divisors is an integer number (5531826).

Almost surely, 2^28551344 is an apocalyptic number.

It is an amenable number.

28551344 is a deficient number, since it is larger than the sum of its proper divisors (26766916).

28551344 is a wasteful number, since it uses less digits than its factorization.

28551344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784467 (or 1784461 counting only the distinct ones).

The product of its digits is 19200, while the sum is 32.

The square root of 28551344 is about 5343.3457683365. The cubic root of 28551344 is about 305.6390578077.

The spelling of 28551344 in words is "twenty-eight million, five hundred fifty-one thousand, three hundred forty-four".