Search a number
-
+
52972408400 = 2452891487989
BaseRepresentation
bin110001010101011001…
…101100111001010000
312001201201221011101212
4301111121230321100
51331441414032100
640200222315252
73553464020312
oct612531547120
9161651834355
1052972408400
11205135a851a
12a324428b28
134cc2813572
1427c73d37b2
1515a07d8635
hexc5566ce50

52972408400 has 60 divisors (see below), whose sum is σ = 128696255100. Its totient is φ = 20950871040.

The previous prime is 52972408351. The next prime is 52972408421. The reversal of 52972408400 is 480427925.

It can be written as a sum of positive squares in 6 ways, for example, as 17063674384 + 35908734016 = 130628^2 + 189496^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 708395 + ... + 779594.

It is an arithmetic number, because the mean of its divisors is an integer number (2144937585).

Almost surely, 252972408400 is an apocalyptic number.

52972408400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

52972408400 is an abundant number, since it is smaller than the sum of its proper divisors (75723846700).

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

52972408400 is a wasteful number, since it uses less digits than its factorization.

52972408400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488096 (or 1488085 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 52972408400 in words is "fifty-two billion, nine hundred seventy-two million, four hundred eight thousand, four hundred".

Divisors: 1 2 4 5 8 10 16 20 25 40 50 80 89 100 178 200 356 400 445 712 890 1424 1780 2225 3560 4450 7120 8900 17800 35600 1487989 2975978 5951956 7439945 11903912 14879890 23807824 29759780 37199725 59519560 74399450 119039120 132431021 148798900 264862042 297597800 529724084 595195600 662155105 1059448168 1324310210 2118896336 2648620420 3310775525 5297240840 6621551050 10594481680 13243102100 26486204200 52972408400