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57431274750 = 233538508337
BaseRepresentation
bin110101011111001010…
…111011010011111110
312111020111002001011000
4311133022323103332
51420104401243000
642214503311130
74102125531543
oct653712732376
9174214061130
1057431274750
11223a1503833
12b16974b4a6
135553517515
142acb672bca
151761e9e000
hexd5f2bb4fe

57431274750 has 64 divisors (see below), whose sum is σ = 159276087360. Its totient is φ = 15315004800.

The previous prime is 57431274679. The next prime is 57431274751. The reversal of 57431274750 is 5747213475.

57431274750 is a `hidden beast` number, since 57 + 4 + 3 + 127 + 475 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 57431274696 and 57431274705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57431274751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4247419 + ... + 4260918.

It is an arithmetic number, because the mean of its divisors is an integer number (2488688865).

Almost surely, 257431274750 is an apocalyptic number.

57431274750 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

57431274750 is an abundant number, since it is smaller than the sum of its proper divisors (101844812610).

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

57431274750 is a wasteful number, since it uses less digits than its factorization.

57431274750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8508363 (or 8508347 counting only the distinct ones).

The product of its (nonzero) digits is 823200, while the sum is 45.

The spelling of 57431274750 in words is "fifty-seven billion, four hundred thirty-one million, two hundred seventy-four thousand, seven hundred fifty".

Divisors: 1 2 3 5 6 9 10 15 18 25 27 30 45 50 54 75 90 125 135 150 225 250 270 375 450 675 750 1125 1350 2250 3375 6750 8508337 17016674 25525011 42541685 51050022 76575033 85083370 127625055 153150066 212708425 229725099 255250110 382875165 425416850 459450198 638125275 765750330 1063542125 1148625495 1276250550 1914375825 2127084250 2297250990 3190626375 3828751650 5743127475 6381252750 9571879125 11486254950 19143758250 28715637375 57431274750