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387306073 = 71135914011
BaseRepresentation
bin10111000101011…
…101001001011001
3222222210012001101
4113011131021121
51243122243243
6102233151401
712412022140
oct2705351131
9888705041
10387306073
11189695870
12a985b561
13623187bb
143961c757
152400754d
hex1715d259

387306073 has 16 divisors (see below), whose sum is σ = 484254720. Its totient is φ = 300934800.

The previous prime is 387306071. The next prime is 387306077. The reversal of 387306073 is 370603783.

It is a cyclic number.

It is not a de Polignac number, because 387306073 - 21 = 387306071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387306071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20638 + ... + 34648.

It is an arithmetic number, because the mean of its divisors is an integer number (30265920).

Almost surely, 2387306073 is an apocalyptic number.

It is an amenable number.

387306073 is a deficient number, since it is larger than the sum of its proper divisors (96948647).

387306073 is a wasteful number, since it uses less digits than its factorization.

387306073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14388.

The product of its (nonzero) digits is 63504, while the sum is 37.

The square root of 387306073 is about 19680.0933178682. The cubic root of 387306073 is about 728.9282283043.

The spelling of 387306073 in words is "three hundred eighty-seven million, three hundred six thousand, seventy-three".

Divisors: 1 7 11 77 359 2513 3949 14011 27643 98077 154121 1078847 5029949 35209643 55329439 387306073