28951960 has 16 divisors (see below), whose sum is σ = 65142000. Its totient is φ = 11580768.

The previous prime is 28951933. The next prime is 28951981. The reversal of 28951960 is 6915982.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 723799 = 28951960 / (2 + 8 + 9 + 5 + 1 + 9 + 6 + 0).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 361860 + ... + 361939.

It is an arithmetic number, because the mean of its divisors is an integer number (4071375).

Almost surely, 2^28951960 is an apocalyptic number.

28951960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28951960 is an abundant number, since it is smaller than the sum of its proper divisors (36190040).

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

28951960 is a wasteful number, since it uses less digits than its factorization.

28951960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723810 (or 723806 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 28951960 is about 5380.7025563582. The cubic root of 28951960 is about 307.0619404140.

The spelling of 28951960 in words is "twenty-eight million, nine hundred fifty-one thousand, nine hundred sixty".