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1228173050 = 252131889497
BaseRepresentation
bin100100100110100…
…0110111011111010
310011121000122200202
41021031012323322
510003403014200
6321512002202
742302204306
oct11115067372
93147018622
101228173050
115802a9655
122a3390362
131675a9a20
14b9184d06
1572c531d5
hex49346efa

1228173050 has 24 divisors (see below), whose sum is σ = 2460126396. Its totient is φ = 453479040.

The previous prime is 1228172989. The next prime is 1228173061. The reversal of 1228173050 is 503718221.

It can be written as a sum of positive squares in 6 ways, for example, as 447026449 + 781146601 = 21143^2 + 27949^2 .

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, 944099 + ... + 945398.

Almost surely, 21228173050 is an apocalyptic number.

1228173050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1228173050 is an abundant number, since it is smaller than the sum of its proper divisors (1231953346).

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

1228173050 is a wasteful number, since it uses less digits than its factorization.

1228173050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889522 (or 1889517 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1228173050 is about 35045.2999701815. The cubic root of 1228173050 is about 1070.9105272550.

The spelling of 1228173050 in words is "one billion, two hundred twenty-eight million, one hundred seventy-three thousand, fifty".

Divisors: 1 2 5 10 13 25 26 50 65 130 325 650 1889497 3778994 9447485 18894970 24563461 47237425 49126922 94474850 122817305 245634610 614086525 1228173050