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1316215470 = 23543873849
BaseRepresentation
bin100111001110011…
…1101101010101110
310101201200200012010
41032130331222232
510143422343340
6334335022050
744421434613
oct11634755256
93351620163
101316215470
11615a73189
1230896a926
1317c8c492b
14c6b4250a
157a844b80
hex4e73daae

1316215470 has 16 divisors (see below), whose sum is σ = 3158917200. Its totient is φ = 350990784.

The previous prime is 1316215451. The next prime is 1316215487. The reversal of 1316215470 is 745126131.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 43873849 = 1316215470 / (1 + 3 + 1 + 6 + 2 + 1 + 5 + 4 + 7 + 0).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21936895 + ... + 21936954.

It is an arithmetic number, because the mean of its divisors is an integer number (197432325).

Almost surely, 21316215470 is an apocalyptic number.

1316215470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1316215470 is an abundant number, since it is smaller than the sum of its proper divisors (1842701730).

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

1316215470 is a wasteful number, since it uses less digits than its factorization.

1316215470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43873859.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1316215470 is about 36279.6839842907. The cubic root of 1316215470 is about 1095.9119526966.

The spelling of 1316215470 in words is "one billion, three hundred sixteen million, two hundred fifteen thousand, four hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 43873849 87747698 131621547 219369245 263243094 438738490 658107735 1316215470