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1214105431252 = 2272271219715661
BaseRepresentation
bin10001101010101110010…
…100101010110011010100
311022001211002120021001011
4101222232110222303110
5124342441442300002
62325430300542004
7153500443614220
oct21525624526324
94261732507034
101214105431252
1142899895639a
12177375551904
138a6499bc52c
1442a97a07780
15218ad1e78d7
hex11aae52acd4

1214105431252 has 48 divisors (see below), whose sum is σ = 2439263530368. Its totient is φ = 517963144320.

The previous prime is 1214105431229. The next prime is 1214105431267. The reversal of 1214105431252 is 2521345014121.

It is a congruent number.

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, 77516302 + ... + 77531962.

It is an arithmetic number, because the mean of its divisors is an integer number (50817990216).

Almost surely, 21214105431252 is an apocalyptic number.

It is an amenable number.

1214105431252 is an abundant number, since it is smaller than the sum of its proper divisors (1225158099116).

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

1214105431252 is a wasteful number, since it uses less digits than its factorization.

1214105431252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28096 (or 28094 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 1214105431252 in words is "one trillion, two hundred fourteen billion, one hundred five million, four hundred thirty-one thousand, two hundred fifty-two".

Divisors: 1 2 4 7 14 28 227 454 908 1589 3178 6356 12197 15661 24394 31322 48788 62644 85379 109627 170758 219254 341516 438508 2768719 3555047 5537438 7110094 11074876 14220188 19381033 24885329 38762066 49770658 77524132 99541316 191017217 382034434 764068868 1337120519 2674241038 5348482076 43360908259 86721816518 173443633036 303526357813 607052715626 1214105431252