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53919768 = 23371392309
BaseRepresentation
bin1100110110110…
…0000000011000
310202110102000110
43031230000120
5102300413033
65203404320
71223211330
oct315540030
9122412013
1053919768
11284887a1
12160836a0
13b22b5b6
1472380c0
154b01363
hex336c018

53919768 has 64 divisors (see below), whose sum is σ = 155232000. Its totient is φ = 15288192.

The previous prime is 53919713. The next prime is 53919769. The reversal of 53919768 is 86791935.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53919769) 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, 22198 + ... + 24506.

It is an arithmetic number, because the mean of its divisors is an integer number (2425500).

Almost surely, 253919768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53919768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77616000).

53919768 is an abundant number, since it is smaller than the sum of its proper divisors (101312232).

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

53919768 is a wasteful number, since it uses less digits than its factorization.

53919768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464 (or 2460 counting only the distinct ones).

The product of its digits is 408240, while the sum is 48.

The square root of 53919768 is about 7343.0081029507. The cubic root of 53919768 is about 377.7890259114.

The spelling of 53919768 in words is "fifty-three million, nine hundred nineteen thousand, seven hundred sixty-eight".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 42 56 84 139 168 278 417 556 834 973 1112 1668 1946 2309 2919 3336 3892 4618 5838 6927 7784 9236 11676 13854 16163 18472 23352 27708 32326 48489 55416 64652 96978 129304 193956 320951 387912 641902 962853 1283804 1925706 2246657 2567608 3851412 4493314 6739971 7702824 8986628 13479942 17973256 26959884 53919768