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102104320 = 28579769
BaseRepresentation
bin1100001010111…
…11110100000000
321010010102210111
412011133310000
5202114314240
614044241104
72346605143
oct605376400
9233112714
10102104320
11526a953a
122a240194
13181cc576
14d7bc05a
158e6d1ea
hex615fd00

102104320 has 36 divisors (see below), whose sum is σ = 244574820. Its totient is φ = 40841216.

The previous prime is 102104287. The next prime is 102104323. The reversal of 102104320 is 23401201.

It can be written as a sum of positive squares in 2 ways, for example, as 70023424 + 32080896 = 8368^2 + 5664^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102104320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102104323) 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, 38605 + ... + 41164.

It is an arithmetic number, because the mean of its divisors is an integer number (6793745).

Almost surely, 2102104320 is an apocalyptic number.

102104320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102104320 is an abundant number, since it is smaller than the sum of its proper divisors (142470500).

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

102104320 is an frugal number, since it uses more digits than its factorization.

102104320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79790 (or 79776 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 102104320 is about 10104.6682281013. The cubic root of 102104320 is about 467.3921052732.

Adding to 102104320 its reverse (23401201), we get a palindrome (125505521).

The spelling of 102104320 in words is "one hundred two million, one hundred four thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 640 1280 79769 159538 319076 398845 638152 797690 1276304 1595380 2552608 3190760 5105216 6381520 10210432 12763040 20420864 25526080 51052160 102104320