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2154252748 = 22717585397
BaseRepresentation
bin1000000001100111…
…0100100111001100
312120010121101012211
42000121310213030
513402442041443
6553433040204
7104245563154
oct20031644714
95503541184
102154252748
11a06023a7a
12501556064
13284404b8b
1416616d764
15c91d219d
hex806749cc

2154252748 has 12 divisors (see below), whose sum is σ = 3823040592. Its totient is φ = 1061955440.

The previous prime is 2154252707. The next prime is 2154252797. The reversal of 2154252748 is 8472524512.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2154252748.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3792415 + ... + 3792982.

It is an arithmetic number, because the mean of its divisors is an integer number (318586716).

Almost surely, 22154252748 is an apocalyptic number.

It is an amenable number.

2154252748 is a deficient number, since it is larger than the sum of its proper divisors (1668787844).

2154252748 is a wasteful number, since it uses less digits than its factorization.

2154252748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7585472 (or 7585470 counting only the distinct ones).

The product of its digits is 179200, while the sum is 40.

The square root of 2154252748 is about 46413.9283836221. The cubic root of 2154252748 is about 1291.5133068639.

The spelling of 2154252748 in words is "two billion, one hundred fifty-four million, two hundred fifty-two thousand, seven hundred forty-eight".

Divisors: 1 2 4 71 142 284 7585397 15170794 30341588 538563187 1077126374 2154252748