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400084 = 22293449
BaseRepresentation
bin1100001101011010100
3202022210221
41201223110
5100300314
612324124
73254266
oct1415324
9668727
10400084
11253653
12173644
13110149
14a5b36
157d824
hex61ad4

400084 has 12 divisors (see below), whose sum is σ = 724500. Its totient is φ = 193088.

The previous prime is 400069. The next prime is 400087. The reversal of 400084 is 480004.

It can be written as a sum of positive squares in 2 ways, for example, as 72900 + 327184 = 270^2 + 572^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400087) by changing a digit.

400084 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1609 + ... + 1840.

It is an arithmetic number, because the mean of its divisors is an integer number (60375).

2400084 is an apocalyptic number.

It is an amenable number.

400084 is a deficient number, since it is larger than the sum of its proper divisors (324416).

400084 is a wasteful number, since it uses less digits than its factorization.

400084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3482 (or 3480 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 400084 is about 632.5219363785. The cubic root of 400084 is about 73.6857872559.

Adding to 400084 its reverse (480004), we get a palindrome (880088).

The spelling of 400084 in words is "four hundred thousand, eighty-four".

Divisors: 1 2 4 29 58 116 3449 6898 13796 100021 200042 400084