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627487380 = 22325132389131
BaseRepresentation
bin100101011001101…
…011001010010100
31121201201122212100
4211121223022110
52241114044010
6142133122100
721356361162
oct4531531224
91551648770
10627487380
112a2222613
12156189330
13a0001010
145d4a0232
153a14c2c0
hex2566b294

627487380 has 288 divisors, whose sum is σ = 2179457280. Its totient is φ = 144967680.

The previous prime is 627487379. The next prime is 627487381. The reversal of 627487380 is 83784726.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (627487379) and next prime (627487381).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (627487381) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4789915 + ... + 4790045.

It is an arithmetic number, because the mean of its divisors is an integer number (7567560).

Almost surely, 2627487380 is an apocalyptic number.

627487380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 627487380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1089728640).

627487380 is an abundant number, since it is smaller than the sum of its proper divisors (1551969900).

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

627487380 is a wasteful number, since it uses less digits than its factorization.

627487380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 627487380 is about 25049.6982017748. The cubic root of 627487380 is about 856.1207013101.

The spelling of 627487380 in words is "six hundred twenty-seven million, four hundred eighty-seven thousand, three hundred eighty".