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312200480 = 2551951253
BaseRepresentation
bin10010100110111…
…100110100100000
3210202110102112202
4102212330310200
51114410403410
650551312332
710510442324
oct2246746440
9722412482
10312200480
11150257929
128867b6a8
134c8b0117
142d66b984
151c61dca5
hex129bcd20

312200480 has 24 divisors (see below), whose sum is σ = 737574012. Its totient is φ = 124880128.

The previous prime is 312200479. The next prime is 312200489. The reversal of 312200480 is 84002213.

It can be written as a sum of positive squares in 2 ways, for example, as 304293136 + 7907344 = 17444^2 + 2812^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (312200489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 975467 + ... + 975786.

Almost surely, 2312200480 is an apocalyptic number.

It is an amenable number.

312200480 is an abundant number, since it is smaller than the sum of its proper divisors (425373532).

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

312200480 is a wasteful number, since it uses less digits than its factorization.

312200480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951268 (or 1951260 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 312200480 is about 17669.1957938102. The cubic root of 312200480 is about 678.3875288810.

Adding to 312200480 its reverse (84002213), we get a palindrome (396202693).

The spelling of 312200480 in words is "three hundred twelve million, two hundred thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 1951253 3902506 7805012 9756265 15610024 19512530 31220048 39025060 62440096 78050120 156100240 312200480