28902984 has 32 divisors (see below), whose sum is σ = 78827040. Its totient is φ = 8758400.

The previous prime is 28902983. The next prime is 28902989. The reversal of 28902984 is 48920982.

It is not an unprimeable number, because it can be changed into a prime (28902983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54477 + ... + 55004.

It is an arithmetic number, because the mean of its divisors is an integer number (2463345).

Almost surely, 2^28902984 is an apocalyptic number.

28902984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28902984 is an abundant number, since it is smaller than the sum of its proper divisors (49924056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28902984 is a wasteful number, since it uses less digits than its factorization.

28902984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109501 (or 109497 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 28902984 is about 5376.1495514913. The cubic root of 28902984 is about 306.8886976408. Note that the first 3 decimals are identical.

The spelling of 28902984 in words is "twenty-eight million, nine hundred two thousand, nine hundred eighty-four".