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140904 = 233219103
BaseRepresentation
bin100010011001101000
321011021200
4202121220
514002104
63004200
71124541
oct423150
9234250
10140904
1196955
1269660
134c19a
14394c8
152bb39
hex22668

140904 has 48 divisors (see below), whose sum is σ = 405600. Its totient is φ = 44064.

The previous prime is 140897. The next prime is 140909. The reversal of 140904 is 409041.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (140909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1317 + ... + 1419.

It is an arithmetic number, because the mean of its divisors is an integer number (8450).

2140904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202800).

140904 is an abundant number, since it is smaller than the sum of its proper divisors (264696).

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

140904 is a wasteful number, since it uses less digits than its factorization.

140904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 140904 is about 375.3718156708. The cubic root of 140904 is about 52.0364635768.

Adding to 140904 its reverse (409041), we get a palindrome (549945).

The spelling of 140904 in words is "one hundred forty thousand, nine hundred four".

Divisors: 1 2 3 4 6 8 9 12 18 19 24 36 38 57 72 76 103 114 152 171 206 228 309 342 412 456 618 684 824 927 1236 1368 1854 1957 2472 3708 3914 5871 7416 7828 11742 15656 17613 23484 35226 46968 70452 140904