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157288230280 = 23517317461491
BaseRepresentation
bin1001001001111100011…
…0111110110110001000
3120000222200112222021101
42102133012332312020
510034111241332110
6200131320351144
714235514620016
oct2223706766610
9500880488241
10157288230280
1160784118465
12265976154b4
1311aa84c1c5c
1478816d98b6
15415888013a
hex249f1bed88

157288230280 has 64 divisors (see below), whose sum is σ = 386803745280. Its totient is φ = 57304243200.

The previous prime is 157288230251. The next prime is 157288230289. The reversal of 157288230280 is 82032882751.

It is a super-2 number, since 2×1572882302802 (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 157288230280.

It is not an unprimeable number, because it can be changed into a prime (157288230289) 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, 3709666 + ... + 3751825.

It is an arithmetic number, because the mean of its divisors is an integer number (6043808520).

Almost surely, 2157288230280 is an apocalyptic number.

157288230280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157288230280 is an abundant number, since it is smaller than the sum of its proper divisors (229515515000).

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

157288230280 is a wasteful number, since it uses less digits than its factorization.

157288230280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7461550 (or 7461546 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 46.

The spelling of 157288230280 in words is "one hundred fifty-seven billion, two hundred eighty-eight million, two hundred thirty thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 17 20 31 34 40 62 68 85 124 136 155 170 248 310 340 527 620 680 1054 1240 2108 2635 4216 5270 10540 21080 7461491 14922982 29845964 37307455 59691928 74614910 126845347 149229820 231306221 253690694 298459640 462612442 507381388 634226735 925224884 1014762776 1156531105 1268453470 1850449768 2313062210 2536906940 3932205757 4626124420 5073813880 7864411514 9252248840 15728823028 19661028785 31457646056 39322057570 78644115140 157288230280