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5145680 = 245131491
BaseRepresentation
bin10011101000010001010000
3100200102112202
4103220101100
52304130210
6302142332
761510661
oct23502120
910612482
105145680
1129a5031
1218819a8
1310b21a7
1497d368
156b99a5
hex4e8450

5145680 has 40 divisors (see below), whose sum is σ = 12079584. Its totient is φ = 2038400.

The previous prime is 5145677. The next prime is 5145689. The reversal of 5145680 is 865415.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5145689) 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, 10235 + ... + 10725.

Almost surely, 25145680 is an apocalyptic number.

5145680 is the 1310-th octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5145680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6039792).

5145680 is an abundant number, since it is smaller than the sum of its proper divisors (6933904).

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

5145680 is a wasteful number, since it uses less digits than its factorization.

5145680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 5145680 is about 2268.4091341731. The cubic root of 5145680 is about 172.6424504201.

The spelling of 5145680 in words is "five million, one hundred forty-five thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 131 262 491 524 655 982 1048 1310 1964 2096 2455 2620 3928 4910 5240 7856 9820 10480 19640 39280 64321 128642 257284 321605 514568 643210 1029136 1286420 2572840 5145680