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28901303740 = 2251445065187
BaseRepresentation
bin11010111010101001…
…101110010110111100
32202121011220100110001
4122322221232112330
5433142213204430
621135503124044
72042126012521
oct327251562674
982534810401
1028901303740
111129103a2a1
125726ba3624
13295787c97a
141582569148
15b4244e3ca
hex6baa6e5bc

28901303740 has 12 divisors (see below), whose sum is σ = 60692737896. Its totient is φ = 11560521488.

The previous prime is 28901303719. The next prime is 28901303773. The reversal of 28901303740 is 4730310982.

It is a self number, because there is not a number n which added to its sum of digits gives 28901303740.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 722532574 + ... + 722532613.

It is an arithmetic number, because the mean of its divisors is an integer number (5057728158).

Almost surely, 228901303740 is an apocalyptic number.

28901303740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28901303740 is an abundant number, since it is smaller than the sum of its proper divisors (31791434156).

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

28901303740 is a wasteful number, since it uses less digits than its factorization.

28901303740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445065196 (or 1445065194 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 28901303740 in words is "twenty-eight billion, nine hundred one million, three hundred three thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 1445065187 2890130374 5780260748 7225325935 14450651870 28901303740