Search a number
-
+
12880390902 = 2315114216767
BaseRepresentation
bin10111111111011101…
…10010101011110110
31020020122201122121220
423333232302223312
5202334340002102
65530035251210
7634121342031
oct137756625366
936218648556
1012880390902
11550a710365
1225b5749b06
1312a36839a2
148a2912018
15505bc71bc
hex2ffbb2af6

12880390902 has 16 divisors (see below), whose sum is σ = 25931384832. Its totient is φ = 4265029800.

The previous prime is 12880390847. The next prime is 12880390921. The reversal of 12880390902 is 20909308821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7107478 + ... + 7109289.

It is an arithmetic number, because the mean of its divisors is an integer number (1620711552).

Almost surely, 212880390902 is an apocalyptic number.

12880390902 is an abundant number, since it is smaller than the sum of its proper divisors (13050993930).

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

12880390902 is a wasteful number, since it uses less digits than its factorization.

12880390902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14216923.

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 12880390902 in words is "twelve billion, eight hundred eighty million, three hundred ninety thousand, nine hundred two".

Divisors: 1 2 3 6 151 302 453 906 14216767 28433534 42650301 85300602 2146731817 4293463634 6440195451 12880390902