Search a number
-
+
2797245450 = 23252172137157
BaseRepresentation
bin1010011010111010…
…1001010000001010
321012221111210101100
42212232221100022
521212043323300
61141322402230
7126214123356
oct24656512012
97187453340
102797245450
111205a769aa
12660960376
133576a452c
141c7708466
15115893700
hexa6ba940a

2797245450 has 216 divisors, whose sum is σ = 8092838052. Its totient is φ = 692490240.

The previous prime is 2797245449. The next prime is 2797245457. The reversal of 2797245450 is 545427972.

It can be written as a sum of positive squares in 18 ways, for example, as 23011209 + 2774234241 = 4797^2 + 52671^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 2797245396 and 2797245405.

It is not an unprimeable number, because it can be changed into a prime (2797245457) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 17816772 + ... + 17816928.

Almost surely, 22797245450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2797245450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4046419026).

2797245450 is an abundant number, since it is smaller than the sum of its proper divisors (5295592602).

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

2797245450 is a wasteful number, since it uses less digits than its factorization.

2797245450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The square root of 2797245450 is about 52888.9917657730. The cubic root of 2797245450 is about 1408.9974010348.

The spelling of 2797245450 in words is "two billion, seven hundred ninety-seven million, two hundred forty-five thousand, four hundred fifty".