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1299497472 = 29337131033
BaseRepresentation
bin100110101110100…
…1100001000000000
310100120020022102000
41031131030020000
510130132404342
6332540424000
744126355240
oct11535141000
93316208360
101299497472
11607594759
12303248000
131792c0320
14c482db20
157914144c
hex4d74c200

1299497472 has 320 divisors, whose sum is σ = 4738863360. Its totient is φ = 342392832.

The previous prime is 1299497467. The next prime is 1299497483. The reversal of 1299497472 is 2747949921.

1299497472 is a `hidden beast` number, since 129 + 9 + 49 + 7 + 472 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1257468 + ... + 1258500.

It is an arithmetic number, because the mean of its divisors is an integer number (14808948).

Almost surely, 21299497472 is an apocalyptic number.

1299497472 is a gapful number since it is divisible by the number (12) 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 1299497472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2369431680).

1299497472 is an abundant number, since it is smaller than the sum of its proper divisors (3439365888).

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

1299497472 is a wasteful number, since it uses less digits than its factorization.

1299497472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080 (or 1058 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 1299497472 is about 36048.5432715387. The cubic root of 1299497472 is about 1091.2522353257.

The spelling of 1299497472 in words is "one billion, two hundred ninety-nine million, four hundred ninety-seven thousand, four hundred seventy-two".