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268797420 = 22335497773
BaseRepresentation
bin10000000001011…
…000010111101100
3200201210022202000
4100001120113230
51022303004140
642401132300
76442511643
oct2001302754
9621708660
10268797420
11128802531
127602a090
13438c4638
14279b035a
15188e8a30
hex100585ec

268797420 has 48 divisors (see below), whose sum is σ = 836260320. Its totient is φ = 71679168.

The previous prime is 268797413. The next prime is 268797439. The reversal of 268797420 is 24797862.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248347 + ... + 249426.

It is an arithmetic number, because the mean of its divisors is an integer number (17422090).

Almost surely, 2268797420 is an apocalyptic number.

268797420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268797420 is an abundant number, since it is smaller than the sum of its proper divisors (567462900).

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

268797420 is a wasteful number, since it uses less digits than its factorization.

268797420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497791 (or 497783 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 268797420 is about 16395.0425434032. The cubic root of 268797420 is about 645.3693935987.

The spelling of 268797420 in words is "two hundred sixty-eight million, seven hundred ninety-seven thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 90 108 135 180 270 540 497773 995546 1493319 1991092 2488865 2986638 4479957 4977730 5973276 7466595 8959914 9955460 13439871 14933190 17919828 22399785 26879742 29866380 44799570 53759484 67199355 89599140 134398710 268797420