Search a number
-
+
1230293655 = 325171608227
BaseRepresentation
bin100100101010100…
…1100101010010111
310011202000101121200
41021111030222113
510004423344110
6322025243543
742326215653
oct11125145227
93152011550
101230293655
11581517918
122a40335b3
13167b70016
14b9577a63
15730216c0
hex4954ca97

1230293655 has 24 divisors (see below), whose sum is σ = 2257952112. Its totient is φ = 617558784.

The previous prime is 1230293641. The next prime is 1230293693. The reversal of 1230293655 is 5563920321.

It is not a de Polignac number, because 1230293655 - 24 = 1230293639 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 803349 + ... + 804878.

It is an arithmetic number, because the mean of its divisors is an integer number (94081338).

Almost surely, 21230293655 is an apocalyptic number.

1230293655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1230293655 is a deficient number, since it is larger than the sum of its proper divisors (1027658457).

1230293655 is a wasteful number, since it uses less digits than its factorization.

1230293655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608255 (or 1608252 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 1230293655 is about 35075.5421198305. The cubic root of 1230293655 is about 1071.5265295960.

The spelling of 1230293655 in words is "one billion, two hundred thirty million, two hundred ninety-three thousand, six hundred fifty-five".

Divisors: 1 3 5 9 15 17 45 51 85 153 255 765 1608227 4824681 8041135 14474043 24123405 27339859 72370215 82019577 136699295 246058731 410097885 1230293655