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55838080 = 275432029
BaseRepresentation
bin1101010100000…
…0010110000000
310220001212110001
43111000112000
5103243304310
65312445344
71245421144
oct325002600
9126055401
1055838080
1129578a81
1216849854
13b7507ac
1475b7224
154d7e93a
hex3540580

55838080 has 64 divisors (see below), whose sum is σ = 136659600. Its totient is φ = 21805056.

The previous prime is 55838071. The next prime is 55838087. The reversal of 55838080 is 8083855.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55838087) 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, 26506 + ... + 28534.

Almost surely, 255838080 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 55838080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68329800).

55838080 is an abundant number, since it is smaller than the sum of its proper divisors (80821520).

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

55838080 is a wasteful number, since it uses less digits than its factorization.

55838080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091 (or 2079 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 55838080 is about 7472.4882067488. The cubic root of 55838080 is about 382.2171403286.

The spelling of 55838080 in words is "fifty-five million, eight hundred thirty-eight thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 43 64 80 86 128 160 172 215 320 344 430 640 688 860 1376 1720 2029 2752 3440 4058 5504 6880 8116 10145 13760 16232 20290 27520 32464 40580 64928 81160 87247 129856 162320 174494 259712 324640 348988 436235 649280 697976 872470 1298560 1395952 1744940 2791904 3489880 5583808 6979760 11167616 13959520 27919040 55838080