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406087 = 11192967
BaseRepresentation
bin1100011001001000111
3202122001021
41203021013
5100443322
612412011
73310633
oct1431107
9678037
10406087
11258110
12177007
13112ab6
14a7dc3
15804c7
hex63247

406087 has 16 divisors (see below), whose sum is σ = 489600. Its totient is φ = 332640.

The previous prime is 406073. The next prime is 406093. The reversal of 406087 is 780604.

It is not a de Polignac number, because 406087 - 27 = 405959 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406027) 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, 6028 + ... + 6094.

It is an arithmetic number, because the mean of its divisors is an integer number (30600).

2406087 is an apocalyptic number.

406087 is the 319-th decagonal number.

406087 is a deficient number, since it is larger than the sum of its proper divisors (83513).

406087 is a wasteful number, since it uses less digits than its factorization.

406087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 406087 is about 637.2495586503. The cubic root of 406087 is about 74.0524950136.

It can be divided in two parts, 4060 and 87, that multiplied together give a triangular number (353220 = T840).

The spelling of 406087 in words is "four hundred six thousand, eighty-seven".

Divisors: 1 11 19 29 67 209 319 551 737 1273 1943 6061 14003 21373 36917 406087