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319433980 = 22515971699
BaseRepresentation
bin10011000010100…
…010110011111100
3211021001221001011
4103002202303330
51123233341410
651410325004
710626100255
oct2302426374
9737057034
10319433980
11154348528
128ab89764
13512436b8
14305d1b2c
151d09c18a
hex130a2cfc

319433980 has 12 divisors (see below), whose sum is σ = 670811400. Its totient is φ = 127773584.

The previous prime is 319433969. The next prime is 319434019. The reversal of 319433980 is 89334913.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7985830 + ... + 7985869.

It is an arithmetic number, because the mean of its divisors is an integer number (55900950).

Almost surely, 2319433980 is an apocalyptic number.

It is an amenable number.

319433980 is an abundant number, since it is smaller than the sum of its proper divisors (351377420).

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

319433980 is a wasteful number, since it uses less digits than its factorization.

319433980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15971708 (or 15971706 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 319433980 is about 17872.7160778657. The cubic root of 319433980 is about 683.5868570818.

The spelling of 319433980 in words is "three hundred nineteen million, four hundred thirty-three thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 15971699 31943398 63886796 79858495 159716990 319433980