Search a number
-
+
1025330808 = 233223191579
BaseRepresentation
bin111101000111010…
…100111001111000
32122110100012110010
4331013110321320
54044441041213
6245424221520
734260111435
oct7507247170
92573305403
101025330808
11486855237
1224746a8a0
13134568b28
149a262b8c
1560036ac3
hex3d1d4e78

1025330808 has 32 divisors (see below), whose sum is σ = 2574835200. Its totient is φ = 340242528.

The previous prime is 1025330807. The next prime is 1025330821. The reversal of 1025330808 is 8080335201.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025330807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90438 + ... + 101141.

It is an arithmetic number, because the mean of its divisors is an integer number (80463600).

Almost surely, 21025330808 is an apocalyptic number.

It is an amenable number.

1025330808 is an abundant number, since it is smaller than the sum of its proper divisors (1549504392).

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

1025330808 is a wasteful number, since it uses less digits than its factorization.

1025330808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191811 (or 191807 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1025330808 is about 32020.7871233672. The cubic root of 1025330808 is about 1008.3732949094.

The spelling of 1025330808 in words is "one billion, twenty-five million, three hundred thirty thousand, eight hundred eight".

Divisors: 1 2 3 4 6 8 12 24 223 446 669 892 1338 1784 2676 5352 191579 383158 574737 766316 1149474 1532632 2298948 4597896 42722117 85444234 128166351 170888468 256332702 341776936 512665404 1025330808