28988234 has 32 divisors (see below), whose sum is σ = 50388480. Its totient is φ = 12377200.

The previous prime is 28988233. The next prime is 28988249. The reversal of 28988234 is 43288982.

It is not an unprimeable number, because it can be changed into a prime (28988231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29369 + ... + 30339.

It is an arithmetic number, because the mean of its divisors is an integer number (1574640).

Almost surely, 2^28988234 is an apocalyptic number.

28988234 is a deficient number, since it is larger than the sum of its proper divisors (21400246).

28988234 is a wasteful number, since it uses less digits than its factorization.

28988234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066.

The product of its digits is 221184, while the sum is 44.

The square root of 28988234 is about 5384.0722506296. The cubic root of 28988234 is about 307.1901265115.

The spelling of 28988234 in words is "twenty-eight million, nine hundred eighty-eight thousand, two hundred thirty-four".