Search a number
-
+
13578068 = 2272392029
BaseRepresentation
bin110011110010…
…111101010100
3221112211121102
4303302331110
511433444233
61203005232
7223261130
oct63627524
927484542
1013578068
117734449
124669818
132a7537a
141b363c0
1512d31e8
hexcf2f54

13578068 has 24 divisors (see below), whose sum is σ = 27283200. Its totient is φ = 5791968.

The previous prime is 13578049. The next prime is 13578079. The reversal of 13578068 is 86087531.

It is a super-2 number, since 2×135780682 = 368727861225248, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

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, 5678 + ... + 7706.

It is an arithmetic number, because the mean of its divisors is an integer number (1136800).

Almost surely, 213578068 is an apocalyptic number.

It is an amenable number.

13578068 is an abundant number, since it is smaller than the sum of its proper divisors (13705132).

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

13578068 is a wasteful number, since it uses less digits than its factorization.

13578068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279 (or 2277 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 13578068 is about 3684.8430088675. The cubic root of 13578068 is about 238.5682582061.

The spelling of 13578068 in words is "thirteen million, five hundred seventy-eight thousand, sixty-eight".

Divisors: 1 2 4 7 14 28 239 478 956 1673 2029 3346 4058 6692 8116 14203 28406 56812 484931 969862 1939724 3394517 6789034 13578068