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140836 = 22137257
BaseRepresentation
bin100010011000100100
321011012011
4202120210
514001321
63004004
71124413
oct423044
9234164
10140836
11968a3
1269604
134c147
143947a
152bae1
hex22624

140836 has 12 divisors (see below), whose sum is σ = 249228. Its totient is φ = 69632.

The previous prime is 140831. The next prime is 140837. The reversal of 140836 is 638041.

It can be written as a sum of positive squares in 2 ways, for example, as 118336 + 22500 = 344^2 + 150^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420 + ... + 676.

It is an arithmetic number, because the mean of its divisors is an integer number (20769).

2140836 is an apocalyptic number.

It is an amenable number.

140836 is a deficient number, since it is larger than the sum of its proper divisors (108392).

140836 is a wasteful number, since it uses less digits than its factorization.

140836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 140836 is about 375.2812278812. The cubic root of 140836 is about 52.0280913307.

Adding to 140836 its reverse (638041), we get a palindrome (778877).

It can be divided in two parts, 1408 and 36, that added together give a square (1444 = 382).

The spelling of 140836 in words is "one hundred forty thousand, eight hundred thirty-six".

Divisors: 1 2 4 137 257 274 514 548 1028 35209 70418 140836