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28903073120 = 255180644207
BaseRepresentation
bin11010111010110000…
…011110010101100000
32202121022020020120122
4122322300132111200
5433143141314440
621140005055412
72042150032205
oct327260362540
982538206518
1028903073120
1111292038699
1257276b7568
13295804c13c
1415828a9cac
15b4269d7b5
hex6bac1e560

28903073120 has 24 divisors (see below), whose sum is σ = 68283510624. Its totient is φ = 11561229184.

The previous prime is 28903073093. The next prime is 28903073137. The reversal of 28903073120 is 2137030982.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90321944 + ... + 90322263.

It is an arithmetic number, because the mean of its divisors is an integer number (2845146276).

Almost surely, 228903073120 is an apocalyptic number.

28903073120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28903073120 is an abundant number, since it is smaller than the sum of its proper divisors (39380437504).

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

28903073120 is a wasteful number, since it uses less digits than its factorization.

28903073120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180644222 (or 180644214 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 28903073120 in words is "twenty-eight billion, nine hundred three million, seventy-three thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 180644207 361288414 722576828 903221035 1445153656 1806442070 2890307312 3612884140 5780614624 7225768280 14451536560 28903073120