Search a number
256652 = 221119307
BaseRepresentation
bin111110101010001100
3111001001122
4332222030
531203102
65300112
72116154
oct765214
9431048
10256652
11165910
12104638
138ca86
1469764
15510a2
hex3ea8c

256652 has 24 divisors (see below), whose sum is σ = 517440. Its totient is φ = 110160.

The previous prime is 256651. The next prime is 256661.

It is a happy number.

256652 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (256651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 683 + ... + 989.

It is an arithmetic number, because the mean of its divisors is an integer number (21560).

2256652 is an apocalyptic number.

256652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

256652 is an abundant number, since it is smaller than the sum of its proper divisors (260788).

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

256652 is a wasteful number, since it uses less digits than its factorization.

256652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 339 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 256652 is about 506.6083299749. The cubic root of 256652 is about 63.5499018739.

The spelling of 256652 in words is "two hundred fifty-six thousand, six hundred fifty-two".