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620238080 = 28572112931
BaseRepresentation
bin100100111110000…
…001010100000000
31121020002100200202
4210332001110000
52232240104310
6141313504332
721240636200
oct4476012400
91536070622
10620238080
11299121060
121538720a8
139b6634a7
145c534400
15396b93a5
hex24f81500

620238080 has 432 divisors, whose sum is σ = 2013258240. Its totient is φ = 180633600.

The previous prime is 620238029. The next prime is 620238083. The reversal of 620238080 is 80832026.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620238083) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20007665 + ... + 20007695.

It is an arithmetic number, because the mean of its divisors is an integer number (4660320).

Almost surely, 2620238080 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 620238080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1006629120).

620238080 is an abundant number, since it is smaller than the sum of its proper divisors (1393020160).

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

620238080 is a wasteful number, since it uses less digits than its factorization.

620238080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 620238080 is about 24904.5794985581. The cubic root of 620238080 is about 852.8110302035.

The spelling of 620238080 in words is "six hundred twenty million, two hundred thirty-eight thousand, eighty".