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54888920 = 23517531523
BaseRepresentation
bin1101000101100…
…0100111011000
310211021122102222
43101120213120
5103022421140
65240243212
71234356002
oct321304730
9124248388
1054888920
1128a8a949
1216470508
13b4aa768
14740b372
154c435b5
hex34589d8

54888920 has 64 divisors (see below), whose sum is σ = 133319520. Its totient is φ = 20260864.

The previous prime is 54888901. The next prime is 54888923. The reversal of 54888920 is 2988845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54888923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35279 + ... + 36801.

Almost surely, 254888920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54888920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66659760).

54888920 is an abundant number, since it is smaller than the sum of its proper divisors (78430600).

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

54888920 is a wasteful number, since it uses less digits than its factorization.

54888920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604 (or 1600 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 44.

The square root of 54888920 is about 7408.7056899299. The cubic root of 54888920 is about 380.0390541579.

The spelling of 54888920 in words is "fifty-four million, eight hundred eighty-eight thousand, nine hundred twenty".

Divisors: 1 2 4 5 8 10 17 20 34 40 53 68 85 106 136 170 212 265 340 424 530 680 901 1060 1523 1802 2120 3046 3604 4505 6092 7208 7615 9010 12184 15230 18020 25891 30460 36040 51782 60920 80719 103564 129455 161438 207128 258910 322876 403595 517820 645752 807190 1035640 1372223 1614380 2744446 3228760 5488892 6861115 10977784 13722230 27444460 54888920