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1250888420 = 22562544421
BaseRepresentation
bin100101010001111…
…0000101011100100
310020011202201022202
41022203300223210
510030211412140
6324042514032
742666243005
oct11243605344
93204681282
101250888420
11592103a91
122aab05918
1316c201082
14bc1b91ac
1574c3d915
hex4a8f0ae4

1250888420 has 12 divisors (see below), whose sum is σ = 2626865724. Its totient is φ = 500355360.

The previous prime is 1250888411. The next prime is 1250888453. The reversal of 1250888420 is 248880521.

It can be written as a sum of positive squares in 2 ways, for example, as 660592804 + 590295616 = 25702^2 + 24296^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31272191 + ... + 31272230.

It is an arithmetic number, because the mean of its divisors is an integer number (218905477).

Almost surely, 21250888420 is an apocalyptic number.

1250888420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1250888420 is an abundant number, since it is smaller than the sum of its proper divisors (1375977304).

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

1250888420 is a wasteful number, since it uses less digits than its factorization.

1250888420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62544430 (or 62544428 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 38.

The square root of 1250888420 is about 35367.9009838017. The cubic root of 1250888420 is about 1077.4724902941.

The spelling of 1250888420 in words is "one billion, two hundred fifty million, eight hundred eighty-eight thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 62544421 125088842 250177684 312722105 625444210 1250888420