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2542680 = 2332571009
BaseRepresentation
bin1001101100110001011000
311210011220100
421230301120
51122331210
6130255400
730420030
oct11546130
94704810
102542680
111487398
12a27560
136b045a
144a28c0
153535c0
hex26cc58

2542680 has 96 divisors (see below), whose sum is σ = 9453600. Its totient is φ = 580608.

The previous prime is 2542669. The next prime is 2542681. The reversal of 2542680 is 862452.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2542681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2016 + ... + 3024.

It is an arithmetic number, because the mean of its divisors is an integer number (98475).

22542680 is an apocalyptic number.

2542680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2542680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4726800).

2542680 is an abundant number, since it is smaller than the sum of its proper divisors (6910920).

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

2542680 is a wasteful number, since it uses less digits than its factorization.

2542680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033 (or 1026 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 2542680 is about 1594.5783141633. The cubic root of 2542680 is about 136.4888691966.

The spelling of 2542680 in words is "two million, five hundred forty-two thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 7 8 9 10 12 14 15 18 20 21 24 28 30 35 36 40 42 45 56 60 63 70 72 84 90 105 120 126 140 168 180 210 252 280 315 360 420 504 630 840 1009 1260 2018 2520 3027 4036 5045 6054 7063 8072 9081 10090 12108 14126 15135 18162 20180 21189 24216 28252 30270 35315 36324 40360 42378 45405 56504 60540 63567 70630 72648 84756 90810 105945 121080 127134 141260 169512 181620 211890 254268 282520 317835 363240 423780 508536 635670 847560 1271340 2542680