28949960 has 32 divisors (see below), whose sum is σ = 70149240. Its totient is φ = 10689024.

The previous prime is 28949959. The next prime is 28949969. The reversal of 28949960 is 6994982.

It can be written as a sum of positive squares in 4 ways, for example, as 23483716 + 5466244 = 4846^2 + 2338^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28949969) 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, 27317 + ... + 28356.

Almost surely, 2^28949960 is an apocalyptic number.

28949960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28949960 is an abundant number, since it is smaller than the sum of its proper divisors (41199280).

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

28949960 is a wasteful number, since it uses less digits than its factorization.

28949960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55697 (or 55693 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 28949960 is about 5380.5167038120. The cubic root of 28949960 is about 307.0548696432.

The spelling of 28949960 in words is "twenty-eight million, nine hundred forty-nine thousand, nine hundred sixty".