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57130950 = 23521272999
BaseRepresentation
bin1101100111101…
…1111111000110
310222111112221010
43121323333012
5104111142300
65400303050
71262414352
oct331737706
9128445833
1057130950
112a281368
1217171a86
13bab40c6
147832462
155037a50
hex367bfc6

57130950 has 48 divisors (see below), whose sum is σ = 142848000. Its totient is φ = 15109920.

The previous prime is 57130943. The next prime is 57131003. The reversal of 57130950 is 5903175.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17551 + ... + 20549.

It is an arithmetic number, because the mean of its divisors is an integer number (2976000).

Almost surely, 257130950 is an apocalyptic number.

57130950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 57130950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71424000).

57130950 is an abundant number, since it is smaller than the sum of its proper divisors (85717050).

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

57130950 is a wasteful number, since it uses less digits than its factorization.

57130950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3141 (or 3136 counting only the distinct ones).

The product of its (nonzero) digits is 4725, while the sum is 30.

The square root of 57130950 is about 7558.5018356815. The cubic root of 57130950 is about 385.1446018919.

The spelling of 57130950 in words is "fifty-seven million, one hundred thirty thousand, nine hundred fifty".

Divisors: 1 2 3 5 6 10 15 25 30 50 75 127 150 254 381 635 762 1270 1905 2999 3175 3810 5998 6350 8997 9525 14995 17994 19050 29990 44985 74975 89970 149950 224925 380873 449850 761746 1142619 1904365 2285238 3808730 5713095 9521825 11426190 19043650 28565475 57130950