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2981274252 = 2231127183341
BaseRepresentation
bin1011000110110010…
…1010001010001100
321200202210102102220
42301230222022030
522101201234002
61211455015340
7133610261445
oct26154521214
97622712386
102981274252
11129a940520
126b250a550
13386859108
14203d302cc
15126ae57bc
hexb1b2a28c

2981274252 has 48 divisors (see below), whose sum is σ = 7616792064. Its totient is φ = 900072000.

The previous prime is 2981274239. The next prime is 2981274293. The reversal of 2981274252 is 2524721892.

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, 5899 + ... + 77442.

It is an arithmetic number, because the mean of its divisors is an integer number (158683168).

Almost surely, 22981274252 is an apocalyptic number.

2981274252 is a gapful number since it is divisible by the number (22) 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 2981274252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3808396032).

2981274252 is an abundant number, since it is smaller than the sum of its proper divisors (4635517812).

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

2981274252 is a wasteful number, since it uses less digits than its factorization.

2981274252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83630 (or 83628 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 2981274252 is about 54601.0462537120. The cubic root of 2981274252 is about 1439.2425047619.

The spelling of 2981274252 in words is "two billion, nine hundred eighty-one million, two hundred seventy-four thousand, two hundred fifty-two".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 132 271 542 813 1084 1626 2981 3252 5962 8943 11924 17886 35772 83341 166682 250023 333364 500046 916751 1000092 1833502 2750253 3667004 5500506 11001012 22585411 45170822 67756233 90341644 135512466 248439521 271024932 496879042 745318563 993758084 1490637126 2981274252