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5001280 = 26515629
BaseRepresentation
bin10011000101000001000000
3100102002110121
4103011001000
52240020110
6255110024
760336664
oct23050100
910362417
105001280
112906599
121812314
13106154b
149428a4
1568bcda
hex4c5040

5001280 has 28 divisors (see below), whose sum is σ = 11910060. Its totient is φ = 2000384.

The previous prime is 5001277. The next prime is 5001289. The reversal of 5001280 is 821005.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3936256 + 1065024 = 1984^2 + 1032^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5001289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7495 + ... + 8134.

Almost surely, 25001280 is an apocalyptic number.

It is an amenable number.

5001280 is an abundant number, since it is smaller than the sum of its proper divisors (6908780).

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

5001280 is a wasteful number, since it uses less digits than its factorization.

5001280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15646 (or 15636 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 5001280 is about 2236.3541758854. The cubic root of 5001280 is about 171.0121852174.

Adding to 5001280 its reverse (821005), we get a palindrome (5822285).

It can be divided in two parts, 500 and 1280, that multiplied together give a square (640000 = 8002).

The spelling of 5001280 in words is "five million, one thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 160 320 15629 31258 62516 78145 125032 156290 250064 312580 500128 625160 1000256 1250320 2500640 5001280