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1204214144 = 2778915101
BaseRepresentation
bin100011111000110…
…1101100110000000
310002220221102020212
41013301231212000
54431234323034
6315254253252
741561436260
oct10761554600
93086842225
101204214144
11568824a01
12297357228
1316263b663
14b5d097a0
1570abe2ce
hex47c6d980

1204214144 has 64 divisors (see below), whose sum is σ = 2772727200. Its totient is φ = 510259200.

The previous prime is 1204214117. The next prime is 1204214147. The reversal of 1204214144 is 4414124021.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204214147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72194 + ... + 87294.

Almost surely, 21204214144 is an apocalyptic number.

1204214144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1204214144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1386363600).

1204214144 is an abundant number, since it is smaller than the sum of its proper divisors (1568513056).

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

1204214144 is an equidigital number, since it uses as much as digits as its factorization.

1204214144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15211 (or 15199 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 1204214144 is about 34701.7887723385. The cubic root of 1204214144 is about 1063.9010592605.

Adding to 1204214144 its reverse (4414124021), we get a palindrome (5618338165).

The spelling of 1204214144 in words is "one billion, two hundred four million, two hundred fourteen thousand, one hundred forty-four".

Divisors: 1 2 4 7 8 14 16 28 32 56 64 89 112 128 178 224 356 448 623 712 896 1246 1424 2492 2848 4984 5696 9968 11392 15101 19936 30202 39872 60404 79744 105707 120808 211414 241616 422828 483232 845656 966464 1343989 1691312 1932928 2687978 3382624 5375956 6765248 9407923 10751912 13530496 18815846 21503824 37631692 43007648 75263384 86015296 150526768 172030592 301053536 602107072 1204214144