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380015973 = 3242223997
BaseRepresentation
bin10110101001101…
…001010101100101
3222111001210220200
4112221221111211
51234241002343
6101413021113
712263040201
oct2651512545
9874053820
10380015973
11185566697
12a7324799
136096552c
1438681b01
15235674d3
hex16a69565

380015973 has 6 divisors (see below), whose sum is σ = 548911974. Its totient is φ = 253343976.

The previous prime is 380015969. The next prime is 380015981. The reversal of 380015973 is 379510083.

It can be written as a sum of positive squares in only one way, i.e., 273141729 + 106874244 = 16527^2 + 10338^2 .

It is not a de Polignac number, because 380015973 - 22 = 380015969 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380015953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21111990 + ... + 21112007.

It is an arithmetic number, because the mean of its divisors is an integer number (91485329).

Almost surely, 2380015973 is an apocalyptic number.

It is an amenable number.

380015973 is a deficient number, since it is larger than the sum of its proper divisors (168896001).

380015973 is a wasteful number, since it uses less digits than its factorization.

380015973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42224003 (or 42224000 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 380015973 is about 19493.9983841181. The cubic root of 380015973 is about 724.3257928807.

The spelling of 380015973 in words is "three hundred eighty million, fifteen thousand, nine hundred seventy-three".

Divisors: 1 3 9 42223997 126671991 380015973