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11787062420 = 2257312715913
BaseRepresentation
bin10101111101001000…
…00100110010010100
31010102110102210220102
422332210010302110
5143114441444140
65225341353232
7565044243320
oct127644046224
933373383812
1011787062420
114aa9542501
12234b568818
13115acca863
147db62c980
1548ec0ce15
hex2be904c94

11787062420 has 48 divisors (see below), whose sum is σ = 29201507328. Its totient is φ = 3910913280.

The previous prime is 11787062401. The next prime is 11787062429. The reversal of 11787062420 is 2426078711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11787062429) 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, 1353617 + ... + 1362296.

It is an arithmetic number, because the mean of its divisors is an integer number (608364736).

Almost surely, 211787062420 is an apocalyptic number.

11787062420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11787062420 is an abundant number, since it is smaller than the sum of its proper divisors (17414444908).

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

11787062420 is a wasteful number, since it uses less digits than its factorization.

11787062420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2715960 (or 2715958 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The spelling of 11787062420 in words is "eleven billion, seven hundred eighty-seven million, sixty-two thousand, four hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 31 35 62 70 124 140 155 217 310 434 620 868 1085 2170 4340 2715913 5431826 10863652 13579565 19011391 27159130 38022782 54318260 76045564 84193303 95056955 168386606 190113910 336773212 380227820 420966515 589353121 841933030 1178706242 1683866060 2357412484 2946765605 5893531210 11787062420