Search a number
-
+
57378053808 = 2433295744917
BaseRepresentation
bin110101011011111111…
…111001111010110000
312111002202221010202000
4311123333321322300
51420002240210213
642205322454000
74100611260465
oct653377717260
9174082833660
1057378053808
1122374463089
12b153964300
1355454a203a
142ac457b66c
15175c489c73
hexd5bff9eb0

57378053808 has 80 divisors (see below), whose sum is σ = 164755630560. Its totient is φ = 19119124224.

The previous prime is 57378053797. The next prime is 57378053893. The reversal of 57378053808 is 80835087375.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 1254966 + ... + 1299882.

It is an arithmetic number, because the mean of its divisors is an integer number (2059445382).

Almost surely, 257378053808 is an apocalyptic number.

It is an amenable number.

57378053808 is an abundant number, since it is smaller than the sum of its proper divisors (107377576752).

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

57378053808 is a wasteful number, since it uses less digits than its factorization.

57378053808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47891 (or 47879 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 54.

The spelling of 57378053808 in words is "fifty-seven billion, three hundred seventy-eight million, fifty-three thousand, eight hundred eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 108 144 216 432 2957 5914 8871 11828 17742 23656 26613 35484 44917 47312 53226 70968 79839 89834 106452 134751 141936 159678 179668 212904 269502 319356 359336 404253 425808 539004 638712 718672 808506 1078008 1212759 1277424 1617012 2156016 2425518 3234024 4851036 6468048 9702072 19404144 132819569 265639138 398458707 531278276 796917414 1062556552 1195376121 1593834828 2125113104 2390752242 3187669656 3586128363 4781504484 6375339312 7172256726 9563008968 14344513452 19126017936 28689026904 57378053808