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2990192154640 = 245315920435977
BaseRepresentation
bin101011100000110101010…
…101110101100000010000
3101120212012122002002221021
4223200311111311200100
5342442403142422030
610205401511205224
7426014514642535
oct53406525654020
911525178062837
102990192154640
11a53151576359
12403629376814
13188c878b0b02
14a4a244b2d8c
1552bad69097a
hex2b835575810

2990192154640 has 80 divisors (see below), whose sum is σ = 7298096463360. Its totient is φ = 1137875143680.

The previous prime is 2990192154629. The next prime is 2990192154661. The reversal of 2990192154640 is 464512910992.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10071669 + ... + 10364308.

It is an arithmetic number, because the mean of its divisors is an integer number (91226205792).

Almost surely, 22990192154640 is an apocalyptic number.

2990192154640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2990192154640 is an abundant number, since it is smaller than the sum of its proper divisors (4307904308720).

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

2990192154640 is a wasteful number, since it uses less digits than its factorization.

2990192154640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20436080 (or 20436074 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 52.

The spelling of 2990192154640 in words is "two trillion, nine hundred ninety billion, one hundred ninety-two million, one hundred fifty-four thousand, six hundred forty".

Divisors: 1 2 4 5 8 10 16 20 31 40 59 62 80 118 124 155 236 248 295 310 472 496 590 620 944 1180 1240 1829 2360 2480 3658 4720 7316 9145 14632 18290 29264 36580 73160 146320 20435977 40871954 81743908 102179885 163487816 204359770 326975632 408719540 633515287 817439080 1205722643 1267030574 1634878160 2411445286 2534061148 3167576435 4822890572 5068122296 6028613215 6335152870 9645781144 10136244592 12057226430 12670305740 19291562288 24114452860 25340611480 37377401933 48228905720 50681222960 74754803866 96457811440 149509607732 186887009665 299019215464 373774019330 598038430928 747548038660 1495096077320 2990192154640