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2057185480 = 235719386689
BaseRepresentation
bin111101010011110…
…0010100011001000
312022100221211221211
41322213202203020
513203114413410
6540044342504
7101656534210
oct17247424310
95270854854
102057185480
11966255999
12494b44a34
1326a27a21c
14157303240
15c090b68a
hex7a9e28c8

2057185480 has 64 divisors (see below), whose sum is σ = 5568336000. Its totient is φ = 668196864.

The previous prime is 2057185477. The next prime is 2057185483. The reversal of 2057185480 is 845817502.

It is an interprime number because it is at equal distance from previous prime (2057185477) and next prime (2057185483).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (2057185483) 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, 188025 + ... + 198664.

It is an arithmetic number, because the mean of its divisors is an integer number (87005250).

Almost surely, 22057185480 is an apocalyptic number.

2057185480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2057185480 is an abundant number, since it is smaller than the sum of its proper divisors (3511150520).

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

2057185480 is a wasteful number, since it uses less digits than its factorization.

2057185480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386726 (or 386722 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 40.

The square root of 2057185480 is about 45356.2066315074. The cubic root of 2057185480 is about 1271.8165831943.

The spelling of 2057185480 in words is "two billion, fifty-seven million, one hundred eighty-five thousand, four hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 19 20 28 35 38 40 56 70 76 95 133 140 152 190 266 280 380 532 665 760 1064 1330 2660 5320 386689 773378 1546756 1933445 2706823 3093512 3866890 5413646 7347091 7733780 10827292 13534115 14694182 15467560 21654584 27068230 29388364 36735455 51429637 54136460 58776728 73470910 102859274 108272920 146941820 205718548 257148185 293883640 411437096 514296370 1028592740 2057185480