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2551264 = 25611307
BaseRepresentation
bin1001101110110111100000
311210121200021
421232313200
51123120024
6130403224
730454042
oct11566740
94717607
102551264
111492891
12a30514
136b4331
144a5a92
15355de4
hex26ede0

2551264 has 24 divisors (see below), whose sum is σ = 5109048. Its totient is φ = 1253760.

The previous prime is 2551249. The next prime is 2551273. The reversal of 2551264 is 4621552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1299 + ... + 2605.

It is an arithmetic number, because the mean of its divisors is an integer number (212877).

22551264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2551264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2554524).

2551264 is an abundant number, since it is smaller than the sum of its proper divisors (2557784).

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

2551264 is a wasteful number, since it uses less digits than its factorization.

2551264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378 (or 1370 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 2551264 is about 1597.2676669863. The cubic root of 2551264 is about 136.6422905828.

The spelling of 2551264 in words is "two million, five hundred fifty-one thousand, two hundred sixty-four".

Divisors: 1 2 4 8 16 32 61 122 244 488 976 1307 1952 2614 5228 10456 20912 41824 79727 159454 318908 637816 1275632 2551264