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1072808149 = 7417736691
BaseRepresentation
bin111111111100011…
…100000011010101
32202202200022010011
4333330130003111
54144114330044
6254242000221
735404501360
oct7774340325
92682608104
101072808149
11500632706
1225b346071
1314134cc2a
14a26a10d7
15642b4134
hex3ff1c0d5

1072808149 has 8 divisors (see below), whose sum is σ = 1226393408. Its totient is φ = 919304640.

The previous prime is 1072808147. The next prime is 1072808183. The reversal of 1072808149 is 9418082701.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1072808149 - 21 = 1072808147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1072808141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10894 + ... + 47584.

It is an arithmetic number, because the mean of its divisors is an integer number (153299176).

Almost surely, 21072808149 is an apocalyptic number.

It is an amenable number.

1072808149 is a deficient number, since it is larger than the sum of its proper divisors (153585259).

1072808149 is an equidigital number, since it uses as much as digits as its factorization.

1072808149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40875.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 1072808149 is about 32753.7501517002. The cubic root of 1072808149 is about 1023.7031066394.

The spelling of 1072808149 in words is "one billion, seventy-two million, eight hundred eight thousand, one hundred forty-nine".

Divisors: 1 7 4177 29239 36691 256837 153258307 1072808149