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2113371990 = 232531757481
BaseRepresentation
bin111110111110111…
…0111111101010110
312110021200102100200
41331331313331112
513312010400430
6545412521330
7103241236242
oct17575677526
95407612320
102113371990
11994a41724
124ab920246
13278ac0492
1416096b422
15c5809460
hex7df77f56

2113371990 has 48 divisors (see below), whose sum is σ = 5672025216. Its totient is φ = 545385600.

The previous prime is 2113371989. The next prime is 2113372003. The reversal of 2113371990 is 991733112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 375951 + ... + 381530.

It is an arithmetic number, because the mean of its divisors is an integer number (118167192).

Almost surely, 22113371990 is an apocalyptic number.

2113371990 is an abundant number, since it is smaller than the sum of its proper divisors (3558653226).

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

2113371990 is a wasteful number, since it uses less digits than its factorization.

2113371990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757525 (or 757522 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 2113371990 is about 45971.4257990765. The cubic root of 2113371990 is about 1283.2914941477.

The spelling of 2113371990 in words is "two billion, one hundred thirteen million, three hundred seventy-one thousand, nine hundred ninety".

Divisors: 1 2 3 5 6 9 10 15 18 30 31 45 62 90 93 155 186 279 310 465 558 930 1395 2790 757481 1514962 2272443 3787405 4544886 6817329 7574810 11362215 13634658 22724430 23481911 34086645 46963822 68173290 70445733 117409555 140891466 211337199 234819110 352228665 422674398 704457330 1056685995 2113371990