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312887372 = 22770915761
BaseRepresentation
bin10010101001100…
…100100001001100
3210210202022210012
4102221210201030
51120044343442
651014132352
710516333040
oct2251444114
9723668705
10312887372
11150686a06
12889510b8
134ca90975
142d7aa020
151c707582
hex12a6484c

312887372 has 24 divisors (see below), whose sum is σ = 626697120. Its totient is φ = 133896960.

The previous prime is 312887369. The next prime is 312887401. The reversal of 312887372 is 273788213.

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 7 ways as a sum of consecutive naturals, for example, 11972 + ... + 27732.

It is an arithmetic number, because the mean of its divisors is an integer number (26112380).

Almost surely, 2312887372 is an apocalyptic number.

It is an amenable number.

312887372 is an abundant number, since it is smaller than the sum of its proper divisors (313809748).

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

312887372 is a wasteful number, since it uses less digits than its factorization.

312887372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16481 (or 16479 counting only the distinct ones).

The product of its digits is 112896, while the sum is 41.

The square root of 312887372 is about 17688.6226710844. The cubic root of 312887372 is about 678.8846855375.

The spelling of 312887372 in words is "three hundred twelve million, eight hundred eighty-seven thousand, three hundred seventy-two".

Divisors: 1 2 4 7 14 28 709 1418 2836 4963 9926 15761 19852 31522 63044 110327 220654 441308 11174549 22349098 44698196 78221843 156443686 312887372