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312471480 = 23352603929
BaseRepresentation
bin10010100111111…
…110111110111000
3210202222012021210
4102213332332320
51114443041410
651001203120
710512651366
oct2247767670
9722865253
10312471480
111504224a2
12887904a0
134c976589
142d6dc636
151c674220
hex129fefb8

312471480 has 32 divisors (see below), whose sum is σ = 937414800. Its totient is φ = 83325696.

The previous prime is 312471479. The next prime is 312471487. The reversal of 312471480 is 84174213.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312471487) by changing a digit.

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, 1301845 + ... + 1302084.

Almost surely, 2312471480 is an apocalyptic number.

312471480 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312471480 is an abundant number, since it is smaller than the sum of its proper divisors (624943320).

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

312471480 is a wasteful number, since it uses less digits than its factorization.

312471480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2603943 (or 2603939 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 312471480 is about 17676.8628438419. The cubic root of 312471480 is about 678.5837594699.

The spelling of 312471480 in words is "three hundred twelve million, four hundred seventy-one thousand, four hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 2603929 5207858 7811787 10415716 13019645 15623574 20831432 26039290 31247148 39058935 52078580 62494296 78117870 104157160 156235740 312471480