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207390 = 23531223
BaseRepresentation
bin110010101000011110
3101112111010
4302220132
523114030
64240050
71522431
oct625036
9345433
10207390
111318a7
12a0026
1373521
1455818
15416b0
hex32a1e

207390 has 32 divisors (see below), whose sum is σ = 516096. Its totient is φ = 53280.

The previous prime is 207377. The next prime is 207401. The reversal of 207390 is 93702.

207390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2073902 = 86021224200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 819 + ... + 1041.

It is an arithmetic number, because the mean of its divisors is an integer number (16128).

2207390 is an apocalyptic number.

207390 is the 372-nd pentagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 207390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258048).

207390 is an abundant number, since it is smaller than the sum of its proper divisors (308706).

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

207390 is a wasteful number, since it uses less digits than its factorization.

207390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 207390 is about 455.4009222652. The cubic root of 207390 is about 59.1919440584.

The spelling of 207390 in words is "two hundred seven thousand, three hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 31 62 93 155 186 223 310 446 465 669 930 1115 1338 2230 3345 6690 6913 13826 20739 34565 41478 69130 103695 207390