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387073480 = 23519749121
BaseRepresentation
bin10111000100100…
…100010111001000
3222222100100222211
4113010210113020
51243042322410
6102224154504
712410033053
oct2704442710
9888310884
10387073480
11189547042
12a9768a34
1362266981
143959ba9a
1523ead68a
hex171245c8

387073480 has 32 divisors (see below), whose sum is σ = 875354040. Its totient is φ = 154040320.

The previous prime is 387073451. The next prime is 387073481. The reversal of 387073480 is 84370783.

It can be written as a sum of positive squares in 4 ways, for example, as 325513764 + 61559716 = 18042^2 + 7846^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (387073481) 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, 16681 + ... + 32440.

Almost surely, 2387073480 is an apocalyptic number.

It is an amenable number.

387073480 is an abundant number, since it is smaller than the sum of its proper divisors (488280560).

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

387073480 is a wasteful number, since it uses less digits than its factorization.

387073480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49329 (or 49325 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 387073480 is about 19674.1830834218. The cubic root of 387073480 is about 728.7822820998.

The spelling of 387073480 in words is "three hundred eighty-seven million, seventy-three thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 197 394 788 985 1576 1970 3940 7880 49121 98242 196484 245605 392968 491210 982420 1964840 9676837 19353674 38707348 48384185 77414696 96768370 193536740 387073480