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1309696 = 2101279
BaseRepresentation
bin100111111110000000000
32110112120021
410333300000
5313402241
644023224
714063233
oct4776000
92415507
101309696
11814aa3
12531b14
1336b18b
1426141a
151ad0d1
hex13fc00

1309696 has 22 divisors (see below), whose sum is σ = 2620160. Its totient is φ = 654336.

The previous prime is 1309691. The next prime is 1309699. The reversal of 1309696 is 6969031.

It is a super-2 number, since 2×13096962 = 3430607224832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1309691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385 + ... + 1663.

21309696 is an apocalyptic number.

1309696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1309696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1310080).

1309696 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1309696 is an equidigital number, since it uses as much as digits as its factorization.

1309696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299 (or 1281 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 1309696 is about 1144.4195035039. The cubic root of 1309696 is about 109.4099535632.

The spelling of 1309696 in words is "one million, three hundred nine thousand, six hundred ninety-six".

Divisors: 1 2 4 8 16 32 64 128 256 512 1024 1279 2558 5116 10232 20464 40928 81856 163712 327424 654848 1309696