28343888 has 10 divisors (see below), whose sum is σ = 54916314. Its totient is φ = 14171936.

The previous prime is 28343873. The next prime is 28343891. The reversal of 28343888 is 88834382.

It can be written as a sum of positive squares in only one way, i.e., 27583504 + 760384 = 5252^2 + 872^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 885731 + ... + 885762.

Almost surely, 2^28343888 is an apocalyptic number.

It is an amenable number.

28343888 is a deficient number, since it is larger than the sum of its proper divisors (26572426).

28343888 is a wasteful number, since it uses less digits than its factorization.

28343888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771501 (or 1771495 counting only the distinct ones).

The product of its digits is 294912, while the sum is 44.

The square root of 28343888 is about 5323.8978202065. The cubic root of 28343888 is about 304.8969928962.

The spelling of 28343888 in words is "twenty-eight million, three hundred forty-three thousand, eight hundred eighty-eight".