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378089972 = 221314515011
BaseRepresentation
bin10110100010010…
…011000111110100
3222100102221221022
4112202103013310
51233242334342
6101303440312
712240466061
oct2642230764
9870387838
10378089972
11184470657
12a6756098
136043c9a0
14382ddc68
15232d69d2
hex168931f4

378089972 has 24 divisors (see below), whose sum is σ = 713187552. Its totient is φ = 174348000.

The previous prime is 378089963. The next prime is 378089989. The reversal of 378089972 is 279980873.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72947 + ... + 77957.

It is an arithmetic number, because the mean of its divisors is an integer number (29716148).

Almost surely, 2378089972 is an apocalyptic number.

It is an amenable number.

378089972 is a deficient number, since it is larger than the sum of its proper divisors (335097580).

378089972 is a wasteful number, since it uses less digits than its factorization.

378089972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6479 (or 6477 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 53.

The square root of 378089972 is about 19444.5357877220. The cubic root of 378089972 is about 723.1000411884.

The spelling of 378089972 in words is "three hundred seventy-eight million, eighty-nine thousand, nine hundred seventy-two".

Divisors: 1 2 4 13 26 52 1451 2902 5011 5804 10022 18863 20044 37726 65143 75452 130286 260572 7270961 14541922 29083844 94522493 189044986 378089972