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122788890080 = 2554991537937
BaseRepresentation
bin111001001011011001…
…0011100010111100000
3102201221100221220110122
41302112302130113200
54002432423440310
6132224120015412
711604552226163
oct1622662342740
9381840856418
10122788890080
114809014455a
121b969901568
13b76ac2479c
145d2b8b7ada
1532d9c48555
hex1c96c9c5e0

122788890080 has 48 divisors (see below), whose sum is σ = 290670282000. Its totient is φ = 49017096192.

The previous prime is 122788890071. The next prime is 122788890101. The reversal of 122788890080 is 80098887221.

It is a super-2 number, since 2×1227888900802 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 689129 + ... + 848808.

It is an arithmetic number, because the mean of its divisors is an integer number (6055630875).

Almost surely, 2122788890080 is an apocalyptic number.

122788890080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122788890080 is an abundant number, since it is smaller than the sum of its proper divisors (167881391920).

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

122788890080 is a wasteful number, since it uses less digits than its factorization.

122788890080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538451 (or 1538443 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 53.

The spelling of 122788890080 in words is "one hundred twenty-two billion, seven hundred eighty-eight million, eight hundred ninety thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 499 998 1996 2495 3992 4990 7984 9980 15968 19960 39920 79840 1537937 3075874 6151748 7689685 12303496 15379370 24606992 30758740 49213984 61517480 123034960 246069920 767430563 1534861126 3069722252 3837152815 6139444504 7674305630 12278889008 15348611260 24557778016 30697222520 61394445040 122788890080