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1315153920 = 21135311381
BaseRepresentation
bin100111001100011…
…1010100000000000
310101122200202000110
41032120322200000
510143134411140
6334300151320
744406423663
oct11630724000
93348622013
101315153920
11615408673
12308538540
1317c6126b2
14c69476da
157a6d5380
hex4e63a800

1315153920 has 192 divisors, whose sum is σ = 4346334720. Its totient is φ = 339148800.

The previous prime is 1315153897. The next prime is 1315153963. The reversal of 1315153920 is 293515131.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (30).

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 15 ways as a sum of consecutive naturals, for example, 951630 + ... + 953010.

It is an arithmetic number, because the mean of its divisors is an integer number (22637160).

Almost surely, 21315153920 is an apocalyptic number.

1315153920 is a gapful number since it is divisible by the number (10) 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 1315153920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2173167360).

1315153920 is an abundant number, since it is smaller than the sum of its proper divisors (3031180800).

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

1315153920 is a wasteful number, since it uses less digits than its factorization.

1315153920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442 (or 1422 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 30.

The square root of 1315153920 is about 36265.0509444010. The cubic root of 1315153920 is about 1095.6172496235.

The spelling of 1315153920 in words is "one billion, three hundred fifteen million, one hundred fifty-three thousand, nine hundred twenty".