Search a number
-
+
10390230987 = 3103166920147
BaseRepresentation
bin10011010110100111…
…00101011111001011
3222211010001102101220
421223103211133023
5132234344342422
64435002413123
7515323335423
oct115323453713
928733042356
1010390230987
114452018364
12201b8011a3
13c977bb396
14707d03483
1540c291e5c
hex26b4e57cb

10390230987 has 16 divisors (see below), whose sum is σ = 13997218560. Its totient is φ = 6855119712.

The previous prime is 10390230973. The next prime is 10390231057. The reversal of 10390230987 is 78903209301.

10390230987 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10390230987 - 211 = 10390228939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10390230937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 505648 + ... + 525794.

It is an arithmetic number, because the mean of its divisors is an integer number (874826160).

Almost surely, 210390230987 is an apocalyptic number.

10390230987 is a deficient number, since it is larger than the sum of its proper divisors (3606987573).

10390230987 is a wasteful number, since it uses less digits than its factorization.

10390230987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21922.

The product of its (nonzero) digits is 81648, while the sum is 42.

The spelling of 10390230987 in words is "ten billion, three hundred ninety million, two hundred thirty thousand, nine hundred eighty-seven".

Divisors: 1 3 103 309 1669 5007 20147 60441 171907 515721 2075141 6225423 33625343 100876029 3463410329 10390230987