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542831157220 = 225113358973459
BaseRepresentation
bin1111110011000110100…
…00100001111111100100
31220220010211120221022211
413321203100201333210
532343204234012340
61053212335333204
754134601464002
oct7714320417744
91826124527284
10542831157220
1119a2390448a0
1289255081204
133c25b9191a1
141c3b7805a72
15e1c0e5b5ea
hex7e63421fe4

542831157220 has 48 divisors (see below), whose sum is σ = 1243630785600. Its totient is φ = 197384584320.

The previous prime is 542831157217. The next prime is 542831157229. The reversal of 542831157220 is 22751138245.

It is not an unprimeable number, because it can be changed into a prime (542831157229) 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, 7352851 + ... + 7426309.

It is an arithmetic number, because the mean of its divisors is an integer number (25908974700).

Almost surely, 2542831157220 is an apocalyptic number.

It is an amenable number.

542831157220 is an abundant number, since it is smaller than the sum of its proper divisors (700799628380).

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

542831157220 is a wasteful number, since it uses less digits than its factorization.

542831157220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107068 (or 107066 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The spelling of 542831157220 in words is "five hundred forty-two billion, eight hundred thirty-one million, one hundred fifty-seven thousand, two hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 33589 67178 73459 134356 146918 167945 293836 335890 367295 369479 671780 734590 738958 808049 1469180 1477916 1616098 1847395 3232196 3694790 4040245 7389580 8080490 16160980 2467414351 4934828702 9869657404 12337071755 24674143510 27141557861 49348287020 54283115722 108566231444 135707789305 271415578610 542831157220