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109969040 = 2451374613
BaseRepresentation
bin1101000110111…
…11111010010000
321122221000011102
412203133322100
5211123002130
614525003532
72503502306
oct643377220
9248830142
10109969040
1157090405
12309b35a8
1319a2424c
1410868276
1599c3645
hex68dfe90

109969040 has 20 divisors (see below), whose sum is σ = 255678204. Its totient is φ = 43987584.

The previous prime is 109969021. The next prime is 109969051. The reversal of 109969040 is 40969901.

It can be written as a sum of positive squares in 2 ways, for example, as 15335056 + 94633984 = 3916^2 + 9728^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 109968985 and 109969003.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687227 + ... + 687386.

Almost surely, 2109969040 is an apocalyptic number.

109969040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109969040 is an abundant number, since it is smaller than the sum of its proper divisors (145709164).

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

109969040 is a wasteful number, since it uses less digits than its factorization.

109969040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374626 (or 1374620 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 109969040 is about 10486.6124177448. The cubic root of 109969040 is about 479.0970292584.

The spelling of 109969040 in words is "one hundred nine million, nine hundred sixty-nine thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 40 80 1374613 2749226 5498452 6873065 10996904 13746130 21993808 27492260 54984520 109969040