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5031280 = 245611031
BaseRepresentation
bin10011001100010101110000
3100110121121201
4103030111300
52242000110
6255500544
760523312
oct23142560
910417551
105031280
112927091
121827754
1310720b7
1494d7b2
15695b3a
hex4cc570

5031280 has 40 divisors (see below), whose sum is σ = 11901024. Its totient is φ = 1977600.

The previous prime is 5031253. The next prime is 5031281. The reversal of 5031280 is 821305.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5031281) 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, 4365 + ... + 5395.

Almost surely, 25031280 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 5031280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5950512).

5031280 is an abundant number, since it is smaller than the sum of its proper divisors (6869744).

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

5031280 is a wasteful number, since it uses less digits than its factorization.

5031280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105 (or 1099 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 5031280 is about 2243.0514929444. The cubic root of 5031280 is about 171.3534406227.

Adding to 5031280 its reverse (821305), we get a palindrome (5852585).

The spelling of 5031280 in words is "five million, thirty-one thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 61 80 122 244 305 488 610 976 1031 1220 2062 2440 4124 4880 5155 8248 10310 16496 20620 41240 62891 82480 125782 251564 314455 503128 628910 1006256 1257820 2515640 5031280